One option is pretty obvious from Musk's stated opinion that you should pick and choose among journalists: disintermediate the publication by allowing tips directly to journalist accounts. Musk would go from zero to hero among journalists in no time.
The key is to make tipping as frictionless as possible. In my view, Americans at least would go wild tipping their favorite journalists (and charities and advocacy organizations, and yes even politicians...).
If Musk approaches this from a free speech infrastructure perspective, there's a lot of low hanging fruit.