What services are you imagining here? The whole point of bitcoin is to not require trusting third parties. It is perfectly easy to utilize bitcoin without using any third party service, exchange, website, etc. It doesn't really matter to me who owns most services because I know I will never use them.
Unfortunately, the converse of this is that there are plenty of people who will continue to use any service, regardless of how shady, unethical, untrustworthy, or insecure, they are, or who they are bought over by.
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I'm talking about any possible service someone can offer through blockchain: exchanges, news, block explorers etc. If one buys the top one from each ..
domain? (sorry, non-native English speaker so when I get to explaining in details I suck) and has the power for all of them, they'll slowly head towards the same route Facebook went: bought WhatsApp, bought Instagram.
Within 2 moves, Zuckerberg now owns the platforms used by probably more than half of the entire world. Now run some analysis, try out different things (including censorship) and you have an idea of how masses work.
You, me and only a handful thousands of people out there have stopped using these corporation-controlled services and that's sad.. hence the main idea of mine that the multi-billionaire cryptocurrency business slowly making moves to own a large part of the most-visited and most-used websites & services in this sphere is bad.
Say there are 3 persons: you, me and Joe. You run a top exchange used by 10M people, I run a block explorer used by 5M people, Joe runs CoinMarketCap visited by 15M people. We're 3 different entities with 3 completely separated businesses. Now you have billions and decide to purchase my block explorer and Joe's CMC. Within these 2 moves, you will have the power of using the trust of all these millions of people to your own advantage. Hence, you now start creating a pretty large web of businesses of which data only YOU own and do whatever you wish with it.
That's what scares me. The way all the information is going to be stored by a central entity.
Even if CMC, Binance and Blockchain are not decentralized in any manner, they at least have right now 3 different databases. Hopefully you get my point now, I'm pretty shit when it comes to explaining.