> have a back-door installed to spy on users

There is little evidence this is a motivator for Western leaders. It’s certainly not explanatory for Europe or American states.

Your single point of control point is valid. But these conglomerates’ value to policymakers is broader than spying. Want to pass a tech-leadership package? There’s a ready provider. Deliver on social messaging goals, like diversity or free speech? Scaled provider there, too.

> Deliver on social messaging goals, like diversity or free speech? Scaled provider there, too.

If you expect a monopoly/monoculture to promote diversity and free speech you will be sorely disappointed.