Can we truly have a fully decentralized system? For example, we control our own money, properties, internet etc. If we can, how can we achieve this and what obstacles can we face? I want to control my money and I don't want my government to control what I see on the internet. There are ways of overcoming some of these but the whole internet is coming from the ISPs. We may have a satellite(Elon Musk) for internet which makes the decentralization easier for us.
I'd say that it's next to impossible to achieve an economy that is fully decentralised.
There are certain parts of the clog that is simply unfeasible or inefficient to decentralise. You've seen how decentralised exchanges have performed, for example. Cross currency trading has always been an issue that we've struggled with despite the best attempts at decentralising the entire process.
Escrow platforms (in broader terms, ebay, alibaba, etc.) are likely going to continue to be centralised to some degree, and they really make up a ton of global retail trade right now. It makes sense to remove the middlemen in terms of a currency and decentralising the currency supply, some other things we just have to accept that there is a degree of centrality with.