That was not the case... Sony in their infinite wisdon in the late 90's decided to no longer supply laser assembly pickups to any other company which left Philips, Pioneer and Teac pretty much the suppliers and Phillips was the cheapest OEM supplier so that is the reason for their widespread use. They are far from the best pickup with Teac VRDS probably being the best out there but far more expensive to purchase in bulk. For instance, Wadia has used the Teac units in their highest end players and the Pioneer stable platter in the middle level ones.
Cheers,
Cheers,