"We grew frustrated with X." And yet every one of these AI features is coming to Linear, Asana, Jira, etc. So what would justify the switching cost?
Also admittedly this isn't a product-reason, but at least for now as a relatively small startup we're able to offer a lot more custom support and strategizing with any team that switches over. I can't promise we won't eventually run into the same bottlenecks as the large companies eventually, but for now I'm confident our service is better and some of our users have expressed that as one of the primary motivators for keeping with Dart.
Ultimately, if you're happy with your current system and don't see your team becoming more efficient on Dart then it's probably not worth the switch. However it doesn't take long for any extra hours saved each week to start adding up.