With investing you can make 1000x your money if you bet right. Your returns are determined by your best bets. You can be spewy and it doesn't matter much. Or you can wait for aces and then bet big. It's up to you.

With poker it's not like that. Blinds force you to play mediocre hands and make bets when you're weak. Minimizing your losses with correct play is essential, otherwise you'll bleed out. You can only make money in poker when your opponent makes mistakes (good opponents don't make many) but you can lose money in every hand you play. That's why it's a defensive game.