I wonder how tense things are over at Atlassian right now. Jira seems so universally hated that it feels like any competition that ticks a few basic needs could start hurting them.
Probably not that tense. A lot of enterprises with Very Big Licenses are hard-locked into Atlassian products with little to no chance of changing.
Nobody has either the time or the will to switch because, while all the software kind of sucks, it doesn't suck enough to the point where someone is going to stop working on their product and/or service to jettison Atlassian from their org.