Microsoft was (past tense!) doing something similar for Azure Application Insights... and then the project owner got moved into the AI division and progress on OpenTelemetry support has stopped dead.
These days if your APM doesn't have native OTLP ingestion support, it's effectively useless.
There's just too many languages, frameworks, platforms, and even hardware appliances for any single proprietary closed-source APM to support. Anything that doesn't embrace Open Telemetry is dooming their customers to inevitable dead ends from which the only way out is to switch APM products entirely.
For example, Microsoft "got bored" of supporting Application Insights for PHP, Swift, and GoLang. So any orgs with mixed-language systems (or simply an iOS app or two!) has effectively no recourse other than to switch to a different APM.
