[tpoacher]

I would prefer a name that strongly implies ownership.

Such that by definition it becomes painfully obvious that you don't really own the other stuff when confronted with it.

In the UK freehold versus leasehold do evoke these terms, but only if you've entered the housing market to learn about it by getting bitten first. So not really an instantly recognisable term otherwise.

Then again, perhaps the focus here should be to also start calling all that other software "leasehold" software. I think that would then send the right message and establish "freehold software" as a useful term.

The term leasehold fits well come to think of it. You still "buy" your flat, but there's a lease stipulating conditions and an expiry date (typically decades at least), meaning there are many restrictions to full enjoyment of your purchased property, which also affect your ability / profitability to sell, and at some point you (or your children) might even stop having what you thought were ownership rights.