The entire cryptocurrency market capitalization is a toddler when compared to the global markets like the stock market and the commodity market. considering where Bitcoin started, the whole ecosystem have come a long way since the past decade.
Bitcoin has been the dominant cryptocurrency for long now, I think that could change in the future. For the market to grow large and compete with global market, its becoming clear that other cryptocurrencies might rise to compete with the Bitcoin's marketcap. Top players from the traditional market need to get involved in cryptocurrency and issue decentralized products, the space need a lot of attention at this time. Such close competition could be setting the stage for a multi trillion crypto market.
But then, what is uncertain is regulation, can cryptocurrency grow into a multi-trilion market without the proper regulations?
You raised a valid point because no platform becomes a worldwide name by just one person running the show at some point a whole other participants needs to get their own share of the market. But when it comes to crypto, the marker didn't start from a country to go worldwide, it started from the worldwide before thinking of going local which makes it kind of difficult for bitcoin to be dislodged from that top platform.
On the regulation, except crypto would continue to operate in the shadow with the option of going mainstream, there is no way around it because with the various atrocities committed in the crypto world, it's either regulation or eventual natural death.