Then another search engine will happily take the that browser's market share.

Maybe for less money, then your colleagues will get fired and your salary will be cut etc.

Whenever your earnings depends on someone giving you money, whether it's through advertising or a grant, it's quite normal and common you'll be very careful not to upset them. At least you'll think twice before doing so.

Which search engine might that be? Last time I looked, Google operated a de facto monopoly.