an intolerable infringement on 2nd Amendment rights.

The current party line among 2A defenders is that groups of heavily armed men prominently displaying military style weaponry, in a manner that's inherently threatening and intimidating, are harmlessly engaging in free expression of their 2A freedoms. This line can even be seen on this very site.

This type of situation is only going to get worse until there's a fundamental reevaluation of the meaning of the 2nd Amendment.

just because they're extremely rich.

The problem is more that we live in a plutocracy than that this particular plutocrat is an asshole.