You misunderstand wealth.
Most wealth of the filthy rich is in assets. Musk OWNS stuff that is worth X billions. That doesn't mean he as 140 mio. in cash sitting in his bottom drawer.
Moreoever, much of the spending the filthy rich do is done on debt. They put up their wealth as a collateral and buy stuff with other people's (the banks) money. There's some tax trickery with this the exact details I forgot about.
So yes, coughing up $140 mio. is at least a nuissance, even if on paper it's a rounding error.
The actual story that got buried is that the filthy rich are now in full-blown "I rule the world" mode when their reaction to a fee is not "sorry, we fucked up, won't happen again", but "let's get rid of those rules, they bother me".