Genuine questions

So I’ve been seeing that the White House had a crypto summit and apparently the news hasn’t been great given that the markets aren’t reflecting positive news. But I can’t help but have some questions that are fundamental to what cryptocurrencies are supposed to represent, and that is around decentralization. Currency out of the control of any government that we can use to hedge inflation or possibly move away from fiat currencies altogether. By having a fixed supply inflation could be controlled and thus prevent the kind of situation we’re in now.

Now that major financial institutions and government are in the crypto game so to speak, does it not go against what the fundamental ideals were? Essentially these guys are controlling the markets now, and the whole point of what it was supposed to be is now gone. If they control the majority share of the currency, they in effect control the price. Does this not seem to be an issue? Why are so many wishing for the government to have more control over our money than before? How is having a crypto reserve supposed to “fix” our debt problem?

Also, when I start to research crypto projects they all talk about how the blockchain or their blockchain can handle X amount of transactions and yada yada, but what are these transactions exactly? Are people actually buying something with random ass coins?