So write code.

Maybe post renaissance many artists no longer had patrons, but nothing was stopping them from painting.

If your industry truely is going in the direction where there's no paid work for you to code (which is unlikely in my opinion), nobody is stopping you. It's easier than ever, you have decades of personal computing at your fingertips.

Most people with a thing they love do it as a hobby, not a job. Maybe you've had it good for a long time?

From the GNU Manifesto:

I could answer that nobody is forced to be a programmer. Most of us cannot manage to get any money for standing on the street and making faces. But we are not, as a result, condemned to spend our lives standing on the street making faces, and starving. We do something else.

https://www.gnu.org/gnu/manifesto.en.html

That's tough to do without time and money. Which is something we certainly won't have if the decent jobs get automated out of existence.