I don't think the battle will be in open source software... I think it will be in hardware at our current rate.
There has been ever increasing consolidation in the hardware world along with an ever growing acceptance of restrictions by the public 'for our safety'.
Yeah. Manufacturers are simultaneously pricing and locking us out of silicon. Computers are moving back to big iron tier mainframes, and it looks like remote attestation is the future so any non-corporate owned device will be essentially useless. Free software doesn't matter if we can't run it, or if we're ostracized from digital society should we figure out how to run it.
Everything that everyone who believed in free software worked towards is being destroyed. There is no way to fight back unless we figure out how to fab computers in garages. It was all for nothing. The future is bleak.