I don't understand how unions would help here. Closed platforms are in the interest of developers. Devs make a good amount of money on closed platforms like iOS.
Closed platforms are not in the interest of users.
Closed platforms are not in the interest of users.
For example, Kickstarter unionized in 2020. One of things that initiated unionization was this lack of democratic decision making at Kickstarter[1]:
> One of the changes that most angered employees was the decision to end Drip, announced in late 2018. Drip was a tool that had been developed to let creators of projects on the site start subscriptions, similar to Patreon, allowing them to build sustainable revenue streams. Eliminating the tool “came out of the blue,” Zhang says, with “no consultation” with employees who were affected. “It seemed to be at the whim of one person to just make a blanket decision,” she adds.
If employees are working on projects that go against their users' interests, democratic decision making can give them a voice that they otherwise wouldn't have.
[1] https://www.wired.com/story/how-kickstarter-employees-formed...
Tell a non-tech person that their data is being harvested by Google and Facebook, and see what they reaction is.