Seeing big companies buying billions+ dollars of bitcoin, isn't it becoming too centralized. Could they centralize it if they own a lot of it's portion.
How can we defend against this process?
Large companies buying bitcoin creates a form of centralization of ownership which can have an impact on the market it does not directly centralize the bitcoin core protocol. The bitcoin network is automated and decentralized so it is difficult to say that it will become completely centralized just because of a few large investors. It is still one of the most decentralized cryptocurrencies in the world also the more large companies buy the more demand will increase and the price will increase further which will ultimately help make the market more stable and free from manipulation. This is a virtuous cycle which is very helpful for the long term stability of bitcoin.