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?
Bitcoin does not become centralized based on how much someone owns ,even if someone holds 90% of all bitcoins, they cannot change the rules. Bitcoin is a peer-to-peer monetary network and digital cash system, with software that anyone can run on their computer. As long as anyone can run their own node, choose their software, and decide which rules to follow , and as long as this remains easy ,cheap and simple , Bitcoin stays decentralized.