@ Work to Ride.... no it certainly is not the end of the world, but those company's participation does serve a useful purpose mostly by saving time tracking down the data or estimating for ourselves by providing quick snapshots of the silicon landscape (or perhaps silicon river is better term). My only gripe is that historically even with full participation, the information has not always been the most timely or as up-to-date as would be preferred. Often, but not always, one could learn more and quicker by following articles in WSJ.
Well, if it turns out poorly for Intel and AMD, maybe they'll re-join. It seems the only people concerned about these databases are the journalists who report on them and those who manage the databases. I don't think Intel and AMD are run by stupid people and they are very unlikely to provide you their reasons for leaving. This ain't the end of the world.