I see how this can sound good - the price will rise and we'll get rich. But bitcoin might become an easily manipulated tool for the incredibly rich.
There are some heavy weight speculators/investors in the bitcoin market already. What you will see is that they control the price of bitcoin by driving it down with what looks like a panic sell and speculations on forums/other media about a crash. But before that they will make a headline about how BTC gonna be worth 100k soon, how promissing it is, expecting the price to rise. But when to sell, sell, sell ? - Once the good news(foundation for the rise of bitcoin price) stops or a big negative event about bitcoins appears in media. The 'china banning' thing? It was not that bad, but the trolls tried their best to make it look so and the investors were dumping bitcoin like mad. This resulted in an artificial panic sell mixed with real panic. But now everything is calm. The price is rising. There are hardly any ''the end is nigh'' trolls as they would not want to see the price of BTC fall just as they have bought it for 'pennies'. And now groups with even bigger appetites are here for a slice of the pie. Or atleast that is what the news say. Maybe they are already heavily invested. Feeding us up with hope - buy, piggies, buy - and they will crash it from 7000 back to 2000, just as we were expecting the price of 10k or even more. And the cycle will start all over again.

This view on things might be not so far from the truth and it might very off - it is my speculation on the events and environment of the bitcoin market. I am not a person you would consult with about any market events if it really mattered to you.

But if we assume that something like that might be happening. Does this mean that the bitcoin is gonna be controlled by the big banks? Does it destroy a fundamental part of the bitcoin idea? Or the price of it is not that important?

What worries me most is that the big banks will invest heavily, trip themselves and simulate a lot of damage and how this could harm the economy. And ask for regulations on bitcoins from the governments, but, of course, they will be the ones who gain something out of that deal. Could and will this happen?