They also don't understand how to make money. They think eating in the hand of Google is a viable financial strategy.
There are ways they could make money and leverage their browser, such as becoming a certificate authority (they're literally outsourcing profit) or making their own search engine (which would probably be a bad idea for other reasons). Nothing else is going to replace $400m/year.
Their real problem is not "making money." It's too much easy money making them go soft, and then wasting it.
They've burned up billions with little to show for it (their declining market share is the proof of this) and now wonder how they will survive.