"Founders" are a tiny percentage of the rich, they're just the ones in the news.

The richest 1% own half the wealth in the world and the gap is getting wider. Since 2020, for every dollar of new global wealth gained by someone in the bottom 90%, one of the world’s billionaires has gained $1.7 million. (Source: https://www.globalcitizen.org/en/content/wealth-inequality-o...)

So yes, some of the wealth is going to your retirement account. But for every penny going to a middle-class professional workers retirement, there's about a thousand dollars going to some hedge fund manager or the trust fund of the grandson of some robber baron who got rich a hundred years ago.