Yep. Give people two choices.
1) Purchase a major version and get no updates.
2) Purchase a subscription and get constant updates.
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.
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.