This is the whole difference between a revenue tax and a profit tax.
I don't actually know why exactly a revenue tax isn't more popular, say 1% revenue versus supposed 30% profit tax. (As if any corporation actually pays that tax rate).
Revenue taxes create predictably perverse incentives with fairly pathological outcomes. There is wide agreement that it is a poor way to tax business entities, with many undesirable side effects. Notably, the most tax efficient business structure is one that is maximally vertically integrated to minimize the number of transactions with suppliers.
Small companies end up paying a higher effective tax rate than larger more integrated companies and it discourages companies from specializing in what they are good at, neither of which is conducive to a robust and vibrant economy.
Well right now big companies can just move profits offshore by saying that they make no profit in any given location.
I think in either case big companies aren't going to be challenged much, the trick is what will be the better outcome for the countries and society as a whole.
I don't actually know why exactly a revenue tax isn't more popular, say 1% revenue versus supposed 30% profit tax. (As if any corporation actually pays that tax rate).