Because a company just invests the money. You can't take out money from a company as an owner without taxing it anyway (because you anyway have to pay capital gains tax / personal income tax). My point was that I don't see a point in having corporate income tax (that's just an additional tax that prevents companies from investing in the business and employees).
"Invests the money" means it sits in their bank account until they've convinced enough politicians that the money should be taxed as it comes into the company, not when it goes out, and then they issue a massive dividend.