Perhaps I phrased it wrong -- I believe, if you are a person who is extremely frugal, you will also automatically want to reduce your tax liability. Because at the end of the day the result is the same: an expense means money leaves the business, taxes mean that money leaves the business.

It's not necessary.. but probably a personally trait of frugal people. You reduce expenses.

You're absolutely right however that high taxes tend to incentivise reinvestment (so you can tax deduct). But too high taxes also deter entrepreneurship to some extent, because past a certain point a lot of people will feel they're working more for the state than for themselves.