The short time is to find out the effect. This is not about socialism or communism. We don't want to make it so people once they have reached a certain power are no longer able to vote. Not without making some other incentive. They'll simply game the system if we do that and make multiple accounts and make sure they never reach that limit.
The data is useful for understanding trends while this is in BETA so we can come up with fixes.
It is not about making people happy now that they are getting paid more, before we've fixed it.
With useful data we can try to come up with fixes that don't screw anyone over... including those with power.