"They keep fiddling around trying to change the rules and make it “perfect"..."

I think they have not undertaken to potentiate capital gains, but to enable profiteering, and continue to perfect profiteering, expecting capital gains to result.

This is not a recipe for encouraging capital gains and investment. Only looking at problems based on foundational principles enables solid foundations to support structures. The encouragement of stake weighting as a means of extracting rewards from the pool is a flaw in the foundation that prevents support for certain structures, and those enabling capital gains in particular.

There are relatively trivially simple mechanisms that can prevent profiteering that can be written in the code. They are not because profiteering is intentionally the foundation of Steem.