Shareware at the time was generally a one-off purchase though.

As I recall the shareware authors would describe at length how those features cost development time that you the contributor were funding.

The word we had for programs with features removed in this punitive and egregious manner was crippleware.

With shareware, if something had been working for years and the developers released a new version when everything became premium, you could have stayed on the previous version. Not with these cloud tools, and that's why enshitification is a thing when it wasn't before.

first three levels are free! But if you actually want to beat the game, you have to buy it.

Until you ran the crack.exe.

Even came with nice music :-)

this is not at all how shareware worked