You're right, some of them are operated by the usual local bus operators. But some in that list are not. And some not in that list include weird ones like all the condo shuttles, the airport-CBD buses, and of course we can't ignore the one from Lau Pa Sat to the zoo or whatever it is!

In truth I forgot completely about the 188 service because it goes to a casino. I now remember cursing how often it came to my old stop on those few occasions when I was hoping to catch a bus to somewhere other than a casino.