No the internet population at time of Yahoo was X (say 400 million desktop PCs) about year 2000. Then google started to gain ground and from 2000-2010 internet

No the internet population at time of Yahoo was X (say 400 million desktop PCs) about year 2000. Then google started to gain ground and from 2000-2010 internet population went from 400M to 4Bn - and even if every yahoo user from 2000 stuck with yahoo they were just 10% of users - and those users defaulted to google (partly actual defaults, partly fashion, partly here is how you do a search")