Probably different target audiences. Mikrotik originally got big with WISP's years back, where it was common to have Mikrotik handling routing and UBNT handling

Probably different target audiences. Mikrotik originally got big with WISP's years back, where it was common to have Mikrotik handling routing and UBNT handling wireless PtP/PtMP. I've found UBNT's modern switches and routers to be nice from a UI perspective - but oh boy do they have strong opinions on how you should configure them. You have to jump through a ton of hoops to get the Dream Machine Pro to not be your actual gateway, for instance... tricking it into thinking it's the gateway and then unplugging that port, etc. Mikrotik is happy to let you do whatever you want, to your detriment sometimes. UBNT gear seems great for SMB/Home Labs where people just want it to work... Mikrotik is for those who want to tinker, and more power-oriented users looking for non-conventional setups.