The SOTA company of today, is not the SOTA company of the 80s which distributed through Sumiko. The new owners did not buy the old SOTA's liabilities, just the name and design. They had no obligation whatsoever to service or warranty the pre-buyout tables. Go talk to Sumiko if you have a problem with one of the tables they made and sold. The fact that the new SOTA will even service something they didnt produce or sell is a testament to their belief in the inherent value of their products. Oracle is in the same boat. They bought the company in the 90s, and while they can service older tables, they dont have to.
To give an example of a company that I dont believe stands behind their product, or at least keeps spare parts, I tried to order a new face plate from Simaudio for an LP5.3. It has been out of production for less than 2 years. My answer was, no parts. The Simaudio cost as much as a refurbished Sota.
I dont know what you are talking about with Sota stating that you must replace the entire power supply. If you want to bring it up to current specs, then yes, you need to use the current product. They have no obligation whatsoever to stock parts for something they didnt build or sell. See Fletcher or Sumiko.
So, why not take your great expertise and tap into this market for all these non functioning Pabst motors and find or build a new one. Sounds like a profitable business to me. Thats not the business SOTA is in.
While I can hope the price comes down so I can buy a few more SOTAs, how many manufacturers of turnables have an upgrade path that can take a 30 year old table up through their top of the line, and even take your old one in on trade if you want. Their refurbished tables are a true bargain in high end turntables.
And again, I have never had a problem with any of my SOTA motors, even on my Series I, black top model. Or with my multiple Oracle Delphi IIs and Alexandrias that also use a pabst 24vdc motor.