No; blame is a moral concept, and I did not invoke it.
You seem to think Mozilla could have competed with the likes of Google and Microsoft if only they would have made better decisions, or because Firefox once had the largest market share. This is far from obvious.
If a company is incapable of competing, could that mean that whoever is in charge of it is incompetent and must be replaced so that the company can compete again?
When Firefox was dominant, Chrome came from nothing, competed and then dethroned Mozilla. If Mozilla is this incapable, they either have to change people at the top and make better decisions, or just die and stop pretending and selling lies to its users.
You seem to think Mozilla could have competed with the likes of Google and Microsoft if only they would have made better decisions, or because Firefox once had the largest market share. This is far from obvious.