The article argues the exact opposite:
> The standard answer is greed: rapacious ambulance operators, owned by villainous private equity firms, exploit patients at their most helpless. But I don’t think that’s actually what’s going on. Ambulance providers are chronically unprofitable businesses; margins are thin, crews are underpaid, and operators exit the industry every year.
That paragraph is somewhat incoherent at that point in the article: margins are razor thin — at a price tag of $12,000 per 6 miles or $2,000 per mile.
(Yes, there is some other stuff, much, much, much later that maybe cuts into that …)