Fair, however at some point of a companies size/spending the complexity of integrating with a SaaS becomes as large as the one to run your own open source tool.

Beyond that, and Im aware this is very much application/company dependent, theres plenty of SaaS companies that offer horrendous or no support no matter what you pay. We used to use splunk for monitoring and logging. Paid a ton of money because we were handling financial data and needed tracibility and reliability. We constantly had to put out fires that were caused by their unreliable platform. It was not a good experience.

Ultimately, we jumped ship to Prometheus. We pay a fraction of the price and spent less time on it.