Every dollar invested becomes untaxed, whether that happens immediately or is delayed. Always has.

I invest $1M building a great new store for selling widgets. My first year I make a $1M profit. I want to build a second store, but I can't out of profits, because I only can net $700k because of state and federal corporate income taxes.

As you'll immediately get that $300K refunded with your next tax return, it should be trivial to borrow money for a few months.

The idea that there's no access to capital to build out successful businesses is laughable.