Have they ever addressed what would happened to the app you build if their company disappear one day? It doesn't seem safe to build your system on Bubble or any SaaS for that matter unless you know the company will never go away e.g. Salesforce.
Budibase, Baserow, Appsmith, Saltcorn (shameless plug).
So those who can't code are then expected to self-host?
The lock-in is clearly a part of the business model.
I have zero interest in running a hosting business