[macspoofing]

>However, an obvious counterpoint is that Atlassian built a multi-billion-dollar business around up-front pricing, and even seem to still offer that up-front pricing today.

Not quite .. their "Enterprise" package only has a "Contact us" option (no pricing details).

[sam_bristow]

I'm fine with having a "Contact Is" at the top end of a pricing table. At that point you've probably got some pretty unique requirements and there's likely some level of customisation involved.