Another factor of variable pricing is the financial incentive to release memory when it is not used. As the token value increases the opportunity cost of using those tokens to maintain storage also increases.

Opportunity cost in this case is selling EOS (or whatever name it will be called by whoever creates the EOS software/s) at a higher price or am I missing something else which may serve as a financial incentive?

I like the challenge in minimizing memory usage while looking after maximizing opportunity cost when not using so 'cos it might form a better relationship between businesses as well as the block producers. But I do hope that it won't reach to a very difficult point, which is possible.

Viewing this from afar, I think that the verdict will be on how EOS software becomes useful at a world scale, which is possible.

If it reaches the cosmos and that there are already thousands to millions of apps using it, the price will be so high that storage won't be a problem 'cos by then even block producers will be so rich that they'll be able to afford nth generation SSDs or RAMs or even develop some themselves.

Edit: I have another question. Do you guys think it's possible to just outsource storage memory just like how Steemit uses AWS? I'm not yet good about technicalities.