[bayindirh]

Or use "The Dutch Model":

Pay for the major version, get all of its updates. Then pay for update (to next major plus its updates) with a discount.

If you don't prefer the pay, you can keep what you have.

This is what Reaper, Forklift, CameraBag and countless others do, and it works very well.

Edit: This comment contained Forklift as an example before, but they have changed their model, so it's removed.

[tpmoney]

I’m a big fan of JetBrains model for this. Buy the software on a subscription, and the subscription gets cheaper for the first 3 annual renewals. While you’re subscribed you get access to the most current version and when you stop subscribing you have a lifetime license for the latest major version (and it’s patches) that you’ve paid for at least a year of. The subscription helps fund the continuous development that is expected of modern software but you still get to keep something for having invested that money when you’re done.

[kstrauser]

Forklift only sells you a year of updates at a time now.

[bayindirh]

Yeah, you're right. I remembered it now. However, they have stopped doing "major" releases at the same time, too.

Let me update the comment.