I think that the "issue" around otel is that instrumentation is easy and free (as both in beer and freedom) but then for the dashboarding part is where there are literally tens of different SaaS solutions, all more or less involved with the OTel development itself, that want you to use their solution (and pay $$$ for it). And even if you can go a loooong way with a self-hosted Grafana + Tempo, even Grafana Labs are putting more and more new features behind the Grafana Cloud subscription model.