I can sell you (and a dozen other people) a photo of the deed to my house, and it's very nice that you own this photo, but I don't understand why you would pay me real dollars to buy it.
Unless your plan consists of selling it to a bigger fool.
The decentralization is interesting question. How much resources you need to run fully qualified node. That is one that has full history, mempool and so on. And how many of the users actually do this anymore? And how long it takes to bootstrap for new user...
And now multiply this for all the chains you want to use/support... And with BTC you aren't even paid for this service...
I can sell you (and a dozen other people) a photo of the deed to my house, and it's very nice that you own this photo, but I don't understand why you would pay me real dollars to buy it.
Unless your plan consists of selling it to a bigger fool.