After a three-year slump the DRAM business is finally posting rising average selling prices equal to those of three years ago, adding to operating margins rises for six successive periods.
(Source: IHS iSuppli)
As per the trend in the tablet market and the growing demand of tablets it seems that both The Gigabyte and Average Selling Price will increases in the coming years, as most of the entry level tabs were made with 512MB of RAM but due to advances in the OS and Gaming needs now most of the manufactures are shifting towards putting 1GB of RAM in the starting range of the tabs. This will surely increase RAM demand.
May be you will be right, the time will tell the exact results, but as of now increasing sale of Tablets show that the demand of the lower Gigabyte RAM will be of more demand, mobile phones as well adds to it. But at the same time equally the PCs are also demanding more GBs in-terms of RAM but in numbers this will not be able to match the lower GBs of Tabs and Mobiles. Lets wait...