Whatever the true amount is will be based on how much demand we create for Steem Power by making the Steem Social Media Computation Game a fun game to play

Capping rewards may actually make it more fun to play for the majority which is actually more important to giving "meaning" to those "meaningless" dollar values.

It is worth experimenting with and iterating on. There is more at stake here than simple ideology.

If it doesn't work then the system can revert to the old reward system.

Why merely speculate on the outcome when we can test it and gather genuine experimental data?

Testing the hypothesis is the smarter way to do it.