Many apps start with a one-time purchase. Clear deal. You pay once, you own the features.
At some point, the business model changes: subscriptions are introduced, and features people already paid for disappear or become locked behind a new paywall.
I understand why subscriptions exist. Recurring revenue makes products easier to sustain.
But from a user perspective, this feels like changing the rules after the fact. Not a price increase for new users — but a retroactive change for existing ones.
I recently added GPX import to a project I work on, specifically to avoid data lock-in. The idea was simple: even if someone stops using the app, their data should remain usable elsewhere.
This raised a broader question for me:
• Is it ever acceptable to change the deal for existing users? • Where is the line between sustainable monetization and broken trust? • How do you think about “ownership” in software you paid for once?
Genuinely interested in perspectives from founders and users.
If this happens, trust is immediately broken. They have taken away something I paid for. It's a kind of theft.
> Is it ever acceptable to change the deal for existing users?
Not for one-time sales. If it's an ongoing contractual arrangement, like a rental, then its' acceptable to change the deal when the contract renews or on terms agreed to in the contract.
> Where is the line between sustainable monetization and broken trust?
There is no tension between those two things. If you make promises, don't break them and there won't be trust issues.
> How do you think about “ownership” in software you paid for once?
If I have paid for software without the terms being a rental from the start, then my expectation is that I will be able to continue to use the software forever (or as long as I have machines that can run it).
I don't expect to get free updates. If I want an updated version, I expect to buy it. There's a gray area here about security updates, though. A good company will provide security updates at no charge, and feature updates separately for a charge.
MS Office: https://www.microsoft.com/en-us/microsoft-365/p/office-home-...
Adobe Elements: https://www.adobe.com/products/elements-family.html
Also, I have to be frank that both companies are trying to scam people with the subscriptions. Try a full month free, and if you forget to cancel get stuck paying for a full year. The scamming has damaged their reputation more than the actual subscription model.