The way Google defends its income stream against that is simple: They allow your competitors to buy ads on your own names and trademarks, then you're forced to do so as well because otherwise your organic link is below the ads. It used to be that it mattered since only dumb users would click the ads. But now that they're unshaded and look 99% identical, only super nerds bypass ads. Meaning your #1 organic result is basically only good for bragging rights and nothing more if there's anyone willing to pay even a small amount to jump up above you.