It would be interesting to get the Opbeat's founders perspective on why they'd sell and close a product they've been working on since 2012. Just to soon do it again, but this time for someone else's company.
Personally I'm a huge believer of open source, and Elastic is an open source company. That's one of the reasons why I'm super exited about this. I think this move will benefit everyone :)
Do I understand you right in that the plan is to make Elastic APM open source?
I'm curious then why Opbeat itself was never open source?