They work with you to make your code more performant
I wasn’t talking about whether they have expenses, If I recall correctly they have about 7000+ employees.
Generally that kind of company only collaborate on huge projects, smaller projects don’t get that level of service, bust are generally referred to a developer forum, where their questions may be answered by in-house personel. This is as I understand it common, but I’m not a pro gaming programmer, although I used to know a few decades ago.
Fun fact, the story now is that it was a Unity employee who made the death threat!?