"I wish these services were a monolith so there was any amount of discoverability at all, and I don't have to beg for time from busy people on other teams to help me use their undocumented APIs"
It's a fascinating set of priories that lead to these policies.
"We trust you enough to run your code in production but we can't let you read another team's code because you might steal it. Yes, the odds that anyone wants to steal the code for this mundane microservice are staggeringly low... and yes you're going to be less productive and more prone to serious bugs by being in the dark, but that's your problem."
Why do you conflate microservices with discoverability? What's wrong with simply calling a web service?
> (...) and I don't have to beg for time from busy people on other teams to help me use their undocumented APIs
And you believe that the same hypothetical team you claim doesn't document their API would all of a sudden documented all its internal?