Notably the 2020/2021 run, was this the 'Age of Elon', is BTC really worth $20,000. £100,000 or "$1 million please like, subscribe click that notification button, comment and check the bybit link at the bottom for your chance to 100x leverage a shit coin" ?
Shall we just wait till the next billionaire wants to come along at the 'next cycle' and pump and dump?
If we're talking about altcoins, then yeah, influencers can have strong impact if not decisive impact behind some bull runs. Not just any influencers, of course, but those with a very big audience and lots of money. But with Bitcoin, I think there's the influence of the media, of some comments by big names, and of project laws/regulations. The influence isn't usually huge, though, and I think that lately even very powerful people or major Bitcoin regulation discussions barely triggered price changes. Bitcoin is still volatile and people can engage in panic selling or buy out of FOMO. But billionaires don't get a much bigger say in this than others.