Incentives don't disappear at some arbitrary level of taxation. I think you can have both sufficient incentives and more equitable distribution. The frankly obscene levels of wealth concentration we are witnessing suggest that there is a lot of room for refinement.

I do find it interesting that a lot of people (not trying to imply that you are one) bang on about incentives while also fighting tooth and nail in favour of weighting taxes toward earned income (derived from doing useful/productive things) instead of unearned income (derived from simply owning things).

I get that some people view all forms of tax as theft and while I appreciate their honesty, I simply can't take them seriously.