Technology

If you mean launching a rocket to Mars, yes eventually they will be able to do that. That is not what Musk's bullshit. It's a permanent base with people on Mars.

The rocket travel plan is not niche, it's impossible. Sound (environmental) concerns, refueling time cutting into the flight time benefit on turnover, Gs exerted on launch etc. Moreover Musk billed it as a regular service not a "dive to Titanic" kind of activity for billionaires.

It's also impossible to make a rocket as reliable as a plane. If you seriously consider that possible I cannot argue with you on any other point. Just the planes ability to land and maneuver unpowered makes it much more safer and reliable. The nature of it's fuel itself makes it much safer and reliable.

Starship/SuperHeavy is not ready. Engine production rate is a huge problem and they need a lot of them per vehicle. They also currently are unreliable with quite a few failures on the last launch. Some might be a result of the first failing but there were at least two clusters of failure, suggesting at least two independent failures.

So when they get SS/SH working the best thing to do would be to take government contracts, or fly Starlink satellites up if it's profitable. But yeah sending a rocket to Mars for free is exactly the kind of stunt I would expect Musk to do. Like demanding the launch to be on 4/20.