For the last decade or so our Fabless Wonders have had a free ride on process R&D done at "credible" IDMs ( in my book after their HKMG fiasco IBM no longer qualifies ) siphoned out through various consortia and tool vendors.
They may now have $$$ on the table but they can't buy time. Intel started finFET work almost 8 years back. Hard to catch up even at 14 nm within 5 years even if the fabless wonders were now able to pry off enough process talent on behalf of their Foundries and went at it using the traditional chinese water torture approach to Physics ( a huge no. of experiments over a wide parameter space rather than targeting on narrow space with the benefit of device simulation ).
I think ultimately that Qualcomm and other chip companies would just as soon continue to outsource the whole enchilada to TSMC and others, rather than get in bed with TSMC in a JV. As you point out, Peter, owning a fab, or owning it in part, is not simply a matter of opening up a magic chip-building facility. There is a lot of work and know how that has to be done in terms of process development. All of that would have to come from TSMC or another foundry. In the end, it wouldn't be that much different from the situation that Qualcomm and others enjoy today--they pay money to foundries, the foundries provide the knowledge, capability and capacity to build their chips. Entering a JV would only mean that a fabless company was on the hook for the depreciation of the facility and equipment, which would be a liability as soon as oversupply conditions took hold. And oversupply is never that far off.
Not only that, but Qualcomm and its fabless brethen today enjoy the right to work with different foundries, play them off each other, and negotiate the best deal. Once they are a partner in the fab, that flexibility goes out the window.
Of course the advantage of such an arrangement, on the surface, would appear to be certainty of supply. Right about now, that sounds great. But as Qualcomm executives acknowledged the other day, at least part of the problem with the 28-nm capacity crunch is that demand for Qualcomm's 28-nm chips is simply greater than the company anticipated. If Qualcomm had been able to accurately predict what the demand would be, TSMC would have had the capacity available, I think.
I think that now is a good time to be an IDM. The fabless chip companies can't have it both ways. I agree with others that it is too late for them to catch Intel by the 14 nm node anyway. This problem of constrained capacity at the leading edge could go away in a couple of quarters between improving yields and more capacity coming on line. I don't think that now is the time to go back to a failed model - like committing to a JV if you are Qualcomm. I think there is more downside risk than upside potential there.
I wonder if circumstances are really as different today from what they were in the last joint venture backed fab episode?
Companies have been going fabless to begin with because *building* fabs is so enormously expensive that very few companies can afford to do it on their own, and it's likely a few that could simply see better returns on investment elsewhere. Joint ventures are fraught with inherent difficulties because of the issues of getting agreement from the partners on what is being done, what each is expected to put into it, and what each will get out of it, and *maintaining* that agreement as changes in the underlying economy require adjustments to the plans.
If I'm Qualcomm, I'm leaving money on the table because I can't get all the chips I want, but how *much* money is that? How much will it cost to build this joint venture fab? How long will it take me to recoup my investment? And what happens when the wheel turns as it always does and we move to a condition of oversupply again?
I may look at the numbers, and decide I'm better off *leaving* money on the table, because the amount of potential revenue I'm forgoing won't approach what it would cost me to build a fab, even with partners, to address capacity issues that are ultimately transitory.
I don't think that even Qualcomm is big enough to own JV fabs. It does not make any sense to own JV financially. Each generation of process development is multi-billion dollar effort PLUS it will cost JV $6-$7B to build just one 28nm fab. Qualcomm is running 28nm poly-Sion process not HKMG. So using HKMG is another story. For HKMG, TSMC and Common platform uses different gate stacks - gate last vs. gate first. This means Qualcomm has to port designs from one technology to the other along with all their IPs/design enablements. I don't believe they even have enough resources and money to maintain one generation of process and products with multiple technologies/foundries. How about 20nm? and 14-finfet? So this whole story simple does not make any sense.
There were a number of JV fabs built in 90's. UMC has USC, UICC, et al. Chartered had 3 fabs that were JV's with IDM/fabless companies. In my opinion, you picked the wrong one to use as an example. The Camus fab was built far from the other TSMC fabs and suffered some unique problems associated with that distance and culture. The UMC fabs were all built in Hsinchu and the Chartered fabs were all built in Singapore. There were pros and cons to the concept, but you are better served by looking at ones other than Camus for judging a potential return to the concept.