Not at all, the golden age of FOSS is gone.

It might appear that FOSS has won, however in reality what happened is that corporations have managed to control the message thanks to business friendly licenses.

Exactly, and now that these same businesses have LLMs, the savings they got using open source is no longer relevant. I expect we will see far more personal open source projects and a divestment from larger ones. More 1 or two people open source projects and less 100+.