More likely a false perception based on the fog of scale and decreased intimacy: as a singular person, you have no idea what most of the people in the company are like once it passes a certain scale, and the larger it gets, the less informed your opinion can realistically be.
Not to mention, no organization can hire 100,000 people over time and have them all be top 1% talent. That doesn't mean they're not still acquiring more top 1% talent than anybody else.
Funny, I think that's word-for-word identical to what people at Google were telling me in 2006.