“ As an aside, isn't it a strange quirk in our capitalist society that we perceive workers that were vital for early success but then stopped contributing much as "leeches" but early investors who do the same are totally OK and rightfully own their share of the later pie?”

The distinction here is equity vs payroll. Early investors are paid handsomely in equity. Early employees, typically, are as well, having accumulated stock for a decade plus. However, having early contributors hugely over-impact your payroll isn’t really fair.