I think the $100bn number does not refer to the company revenue. According to the company, in 2016 revenue was close to $2bn [1]. It may instead refer to total assets under administration (which was $74bn in 2016, according to the same source).

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[1] https://www.oneamerica.com/newsroom/news-releases/oneamerica...

Life insurance is mostly a passthrough from the living to the families of the dead Most people never use the product.

Roblox has a market cap of 60 billion and less than 1500 employees(it was private until less than a year ago)

Probably this is assets under management, not yearly sales or net income.