We paid up front, remember?
The actual truth about subscriptions or “software as a service” (SaaS) is that they are just the latest tool for companies to create vendor lock-in. The only part of any business that likes SaaS is the accounting department because it contributes to predictable cash flow. That is, until they actually get around to doing the math and they realize that you are now paying almost 3x what you used to with perpetual + maintenance assuming you’ve had your licenses more than 4 years. The reason you haven’t come up with a “deal” for long time perpetual customers is because there isn’t a good one for us.
The biggest problem with SaaS is that once you stop paying you loose access to the software and you can’t get to the 15 years worth of SketchUp models you have on your network. That isn’t a problem with perpetual licenses.
Your 3rd paragraph just makes my head hurt.