It's Coca Cola vs Pepsi. Yes some might even say Pepsi has been shown to taste better, but people still buy loads of Coke.
Of course the tech savvy enterprises will use the best models. But the plumber down the road doesn't care whether she asks Gemini or ChatGPT about the sizing of some fittings.
Right, again, even if you take every advertiser in the world and shove them in a dungeon and then point a cannon at them and say "give me all the money you have", you won't even have 1/10th the money you need.
Everyone is vastly, vastly overestimating advertising. Advertising is a side hustle, because the product is the main hustle.