I can see what you are saying.
Management explains to analysts that in order to get to the $800M they can do the simple exercise of taking current revenues at 50% marketshare and extrapolating it to a 100% marketshare plus a bump up for an Apple license to be re-set mid 2013. Hence, why in order to get to $800M it will take a few years because it includes the Apple license, which is a plus that their bonus is based on that too. But of course that $800M is a minimum and does not include revenue from patent sales,a bump up in rates, expansion of LTE, material M2M amounts etc. which increases the $800M amount a lot more.
Also, to your point on FRAND, if the company's that have currently licensed are content with their rates it must be FRAND and ergo the extrapolation to a 100% marketshare at $800M is for licenses at a FRAND rate.