While VSCode itself is open source, some of its most useful add popular Microsoft-owned extensions does not seem to be open. And I hate how reliant I am on thos

While VSCode itself is open source, some of its most useful add popular Microsoft-owned extensions does not seem to be open. And I hate how reliant I am on those. The list includes remote ssh, Python etc. Without these extensions VSCode loses a lot of edge over other editors like sublime or notepad++.