Some say that the Lightning Network is centralized, but from my point of view, it's still a decentralized solution to scale Bitcoin as anyone would be able to run a Lightning node at will. The huge advantages that it provides for Bitcoin such as dirt-cheap fees, and instant transactions would be too hard to ignore to implement in the future.
However, if the Lightning Network turns out to become a centralized solution for Bitcoin (like many claims it will),
then it would be doomed as only those with a lot of wealth and power would be able to participate in this ecosystem.What are your thoughts about this? Is Lightning really centralized? Or Decentralized?

Are you trying to make up something to spread FUD? Did you bother to take some time to read and understand how LN works?
But please explain. How did you come to the conclusion that "only those with a lot of wealth and power would be able to participate in the Lightning Network". Let's see if you yourself understood what you have posted.