I think having different cash cows does change a company. If it's in their interest to be a good steward of VSCode, Typescript, Github etc then they're more likely to do it.

I think consolidation is actually as much of an issue as which company it is, the more consolidated, arguably the less direct incentive for intercompatibility and open standards. That's more of an issue here because GitHub is not open-source, so unlike the other examples the developer base has nothing to fall back on.

On privacy, that's never stopped anyone from using Angular or Kubernetes because of Google, or React because of Facebook, unfortunately behaviour towards developers seems to be judged separately from behaviour towards users.