Citation needed, corporate taxes have been going down for decades.
> companies or people to leave.
"We can't ever tax anyone because else they would just leave; ergo nothing can or should be done about rampant inequality" is not only false, it is extremely dangerous and accelerates the fall of our democracies.
Companies competing to make the best product is good.
Tiny nations stealing corporations domiciles by offering low tax rates hurts investment in first world economies, the kind we want everyone to have.
Without taxation, the infrastructures needed to maintain a healthy economy are unsustainable. We need to ensure that what companies benefit from public services is taken back so it can be reinvested.