why would that be illegal, unless someone created the law very recently?
I don't know the US constitution, this is why I asked. My assumption is that running for president is not compatible with certain things, e.g. owning and/or editing media. E.g. could somebody in theory buy most of the newspapers, TV and radio channels, get on their boards and run for president?
Usually is the other way round , powerful people buy and manipulate the media so the one they want gets elected, and that way the can move everything behind the curtain.
There's no sub clause for "inventors of powerful machines" not to be qualified for the presidency.