What does HackerNews think of message-db?
Microservice native message and event store for Postgres
There are lots of examples of successful companies using microservices, but I believe the real problem is in defining what constitutes a microservice. Most people call things "microservices" that are nothing of the sort. I can unequivocally say if you built a "service" that depends on other things being 100% available (like another "service") than you haven't built a microservice (ie: those things you built shouldn't be called services).
By that token, autonomy is a pretty important factor. The Udi Dahan teachings (https://particular.net/adsd) (currently available for free) promote this style of architecture. A concrete example of a toolkit for building true microservices can be found in Message DB (https://github.com/message-db/message-db) and/or Eventide (http://docs.eventide-project.org/)
I wouldn't suggest, however, that anyone can just watch the course, pick up these tools and succeed. Like baking a good loaf of bread, it takes a lot of skill, work and experience. Whether or not you succeed at building microservices is ultimately up to you and your team.