which is absolutely Wrong because I do think the reason cryptocurrencies are very different from traditional currencies is the fact that the holder and the user, they don't have to depend on anyone or anything (internet connection ofc )
I second that, but many people in the network are unserious about taking the responsibility of being their own bank, thus they either depend on a third party service to trade/invest for them, or even to store their coins, it's somewhat ridiculous, considering the notion that Bitcoin is a network that to a large extent works to eliminate a third party, but then people would always fail to take responsibility of their funds, thus centralized/third-party services like this would continue to thrive in the network.
for this big guys to start thinking about it means btc is on the right part,
I don't think so exactly, I feel it rather means they are coming to the realization of the benefits of being in the Bitcoin network, as for Bitcoin, it has always been what it is, a decentralized and free network, and a great source of investment, if big/rich people are finding that out now, then it's on them, the network has always been "on the right part".