Yahoo was more of a slow decline, and missed opportunities. They could have actually acquired Google and/or Facebook at one point, and could have been acquired by Microsoft at a later point.
The comment talks about "quickly changes the world around us rather fundamentally", "knocked off their perch", and "within a few years", which doesn't seem like an accurate description of what happened with Yahoo.
The comment talks about "quickly changes the world around us rather fundamentally", "knocked off their perch", and "within a few years", which doesn't seem like an accurate description of what happened with Yahoo.