Pretty much this or something like it, at least in my experience the last 30+ years.

Sales seems to attract folks who are highly 'coin operated'. The large majority (yes...always with the exceptions) really, deep down, don't care about how cool the tech is, or how it's going to change the world...they care about the game of sales and you keep score in the game by how much commission you earn. You really want the salesthing that comes in with "Forget about the salary or draw, I want a 100% commission comp plan" because that's someone who is confident enough in their ability to sell that they aren't worried about paying the mortgage or buying groceries.

Tangentially, one of the worst things I've seen a sales org do is cap commissions. All that incentivizes is "I hit my cap...ima gonna go hang out on my boat until next quarter because why work for sales I'm not going to get comp'ed on".

'coin operated' people. thank you for that. :)