>In fact, I'll just give you 1000 shares of Apple stock, there's no risk to you". And you said no.
That's not the same. See https://en.wikipedia.org/wiki/Opportunity_cost
That's not the same. See https://en.wikipedia.org/wiki/Opportunity_cost
And internal tenure and connections. Yes, for some companies, it's easier to get promoted as a new applicant. At others it's easier to get internally promoted and losing out on a year of that costs you quite a bit of future value.
It was one of the classiest things that ever happened to me in my business career.