That's certainly true, mate. Adoption is key for the success of crypto and Blockchain technology in the mainstream world. While there are many decentralized solutions available today, the whole industry is still largely dominated by centralized entities. This way, Bitcoin and Ethereum can't fulfill Satoshi's vision of decentralizing finance as we know it. A world where everything is decentralized (finance, data, etc) is key towards long-term prosperity. Capitalism has greatly affected people's ability to control their own assets (whenever tangible or intangible). Both Bitcoin and Ethereum makes a decentralized world possible by eliminating the middleman from the system. People are able to interact with their own money without the need for a custodian. In addition, it's possible to interact with decentralized applications that are always available 24/7. This brings censorship-resistance against established third parties of the world (mostly governments and central banks). Society will flourish like never before in a decentralized world, as no single entity will be in charge of everything.
At least, the idea is there. But everything will depend on the people themselves whenever they'd want to make that happen or not. As long as people continue to use centralized services over decentralized ones, we won't be able to see a change in our lives. Cryptocurrencies and smart contracts platforms will still exist, but their full potential will be greatly diminished. It's sad to see the way crypto and Blockchain technology are heading, dominated by greedy businesses, mainstream corporations, and worldwide governments. I hope that developers would continue to work on decentralized solutions in order to maintain the industry as decentralized as possible. Only then, Bitcoin and Ethereum will be able to be able to properly decentralize everything as we know it. Just my thoughts