Um....it's nothing like that. Your decision when buying from Intel will be, buy the cpu with these features already available, or buy a cheaper model with them disabled, and further down the road you can pay to activate them later if you choose to do so. It's a good idea, I just don't see it as something that will get very popular.
I'm thinking you may have missed the point I was trying to make, but that doesn't matter (I probably didn't do a good job putting the point in before anyway).
Yeah, I can see the advantage to "upgrading" your CPU at a later date when you need/want them. But, I would like to throw this out there. To offer higher end CPU's this way (currently it is just low end) requires that the crippled chips be fully functional. That means that the supply of the high end chips will be reduced as it is split between the two versions. Well, reduced supply means increased price, unless Intel really ramped up the production of those models. It's not like disabling something in a core that doesn't pass every test so you can still make some profit, these chips have to pass every test first. But, this hypothetical situation would only be an issue if Intel implements this on the higher end chips, and other popular chips. Now, if they keep it at the lower end, for netbooks and nettops, then I can see a market for it. Buy something for the battery life, at some point see you need more power, so pay a little bit and just carry around a charger with you. That could work.