Certainly a lot of people did sell at various points along the way. Sometimes procrastinating on selling becomes a good thing. lol
Crazy how $100 felt like the peak back then. Just shows how important long-term belief is in Bitcoin.
There were plenty of local maxima and minimum between 2010 and now (and even 2020 etc) and every time so far the next peak has been significantly higher than the earlier ones. And as is mentioned above plenty of people predicted that bitcoin was dead each time, not to mention the nonsense about scams, tulips, Ponzi's etc. Even in July 2010 there was nonsense on supposedly technical forum from people who dismissed it without having understood it at all.
There are plenty of people who couldn't be bothered to investigate or understand and then missed a large opportunity.