I would certainly not mind paying a reasonable amount for "official" support - even per device or even per year/device to get access to all of the features & updates - kinda like having a RHEL subscription (although all the stuff in RHEL is open source, #unlike in Sailfish OS at the moment.

But I can imagine even something like a volume license - Jolla pay Myriad a sum of money per supported device. IIRC each device needs some tweaking due to how Aliend Dalvik works, so it would make sense to pay them for the work (and maintenance!) per supported device. If this is possible I can even imagine community crowdsourcing support for additional devices!

In any case I've asked for clarification in a comment to that new blog post - even though I think the chance of getting a clear answer at this time is slim I do think it can help making Jolla aware of this.