Well, but how did your data packets get from A to B. The telecom infrastructure was even more centralized in the early days.
Discussion
Well if that's where you start, EVERYTHING has always been centralised and always will be. Going right back to hunter gatherer
I worked in the surveillance industry. The internet was a military technology and the agencies never let go of it.
Google and co all where built with that money.
The centralization is a consequence of government having a money printer and thus being able to heave centralized services to a scale that is almost impossible to compete with in a free market way.
But in the long run the market always wins and humans tend to drift to decentralization over time.
The pendulum has only seldom swung far into centralization of civilization as it is now.
There is hope.