Nope - only in the sense of your great grear grandfather's axe after your grandfather replaced the head three times and your father replaced the haft twice and

Nope - only in the sense of your great grear grandfather's axe after your grandfather replaced the head three times and your father replaced the haft twice and the head is now a sledgehammer. Vacuum tube making is about metalworking essentially. Sure you can swap components between the wires but manufacturing of vacuum tubes is entirely different than silicon and even they needed new fab processes for nanometer changes. Lightbulbs and would have been a better pivot (with or without a gas in the medium for neon lights or CFBs) at least until LEDs finished them off.