I think you're missing the point as to why hobbyists gravitate to obsolete industrial grade equipment. A modern machine may do a quality job faster with less manual labor and require less setup time, but the old machine still gets the job done. A company trying to make a profit on each piece of product they produce has a completely different set of priorities than a hobbyist trying to make a one-off item purely for their own personal pleasure.
While the machinery in my shop probably would no longer live up to the rigors of turning out parts all day every day, they are certainly capable making the quality and quantity parts at the rate I need them. On the other hand, I have less invested in two dozen machines than it would cost to purchase one new CNC mill or lathe. We aren't trying to make a living with these machines, but rather spending time relaxing, working with our hands, learning skills, and making objects we can enjoy. Some of us have outfitted our shops with machines put out to pasture when the companies we worked for decided it was time to upgrade to the next generation. The old machines still work fine. However, the company couldn't make a profit paying the machinists the going hourly rate and only making a limited number of parts in the same time period. The new machines allow the company to make enough parts to pay the employees the going wage and benefit rate, and still turn a profit.
I regard my old obsolete machines the same as Charlton Heston regarded his rifle. The only way I'll give them up is when you pry them out of my cold dead hands. That's my story and I'm sticking with it.