Yes, cryptocurrency is going to be there and individually there is nothing we can do about it. In the natural evolution of things as shown by what happened to the internet, there will always be some organizations that will dominate and will be taking a big slice of the pie. In the case of the internet, online monopolies like Google, Facebook and similar establishments are taking the control, influence and decision-power over all of us. And the only way we can gain back our own digital control is to dismantle these monopolies but even the government will not be able to do that so they can just impose stricter policies and sometimes penalties for different reasons. The same thing is going to happen with cryptocurrency as we still need (or many people still prefer) to use and utilize many good infrastructures and services offered by different parties. However, I am wishing that this will not be coming true and that I can be wrong.
As with everything, there will always exist companies and businesses that will provide services to their customers. They will always aim for control and dominance of the market, limited to how far people are willing to let them succeed within the mainstream world. There is no difference when it comes to crypto and Blockchain technology. I believe that a portion of the industry will be centralized, while the rest will remain decentralized controlled by the people themselves. Big players like Bitmain and Binance may have taken a large portion of the crypto market, but they still cannot control the Blockchain. Everything will depend on how far people are willing to let them go, in order for them to succeed.
So far, crypto is still decentralized. However, the hope of the government is for crypto to become centralized in order to destroy it in its entirety. Hopefully, that won't be the case as people continue to support the Blockchain ecosystem as we know it. In the event it becomes completely centralized like the Internet, it can become "reborn" because of its open source nature. Anyone can fork a centralized blockchain, in order to create a new version that's decentralized. Things would've been worse if we couldn't have access to crypto's source code.
Nonetheless, as time goes by, we'll be able to determine the behavior of the whole crypto ecosystem. Diversity of Blockchains and services is key towards putting an end to monopolies that will take over the entire industry. Just my opinion