When I'm not at home my options are pretty much Chargepoint chargers, and there is an Electrify America DC fast charging station about 20 mins away. I'd say about 50% of the time the Chargepoint stations are non-functional in some way (either totally busted and have been for years, or the station just says "offline" or some such). I haven't had problems with the EA chargers but going by online forums my experience seems to be unusual - for a lot of folks their EA experience is even worse than my Chargepoint success rate.
If all these other car companies plan to go 100% electric in the near future, they really need to invest in better charging infrastructure. Say what you will about Tesla but they understood the criticality of solving this problem early on, and their network is currently far better than anyone else's.