Olympus as a company went through "one of the biggest and longest-lived loss-concealing
financial scandals in the history of corporate Japan"
as Wikipedia puts it ... If rising tides lift all boats, then the opposite is what happened here. Talking about the camera business as if the decisions made within that one business unit "led to its downfall" completely ignores the impact to the overall business of the financial scandal.
Sorry but Olympus camera division's "downfall" wasn't because of any of the reasons in that video. Had the parent company not gone through a financial scandal and been forced to restructure itself, you would be enjoying your Oly EM-1 Mk IV right now.