All of those are true! Those projects serve their corporate masters, not you-the-user. If you get some benefit from using them as a dev, it's either incidental

All of those are true! Those projects serve their corporate masters, not you-the-user. If you get some benefit from using them as a dev, it's either incidental or part of a larger plan to lure you into their corporate "ecosystem" (think: why is React so much more dominant than Vue or Svelte?)