1% might have 50% of the wealth, they do not account for 50% of the spending. Especially not at Taco Bell.
Pure capitalism is broken af, but companies like this will feel it if 10% of costumers stops going there. The increase in price can recover some of it, but only to a certain extent. It’s a simple supply and demand issue.
That being said, I’m not from the US, so take my opinion on local issues with a grain of salth. And I definitely don’t mean to imply that wealth inequality is not an issue. On the contrary.