Third–party tools don't bring money to LinkedIn, that's the issue. Rather than try to compete, much easier to force you to use their tools! Reddit did the same thing.
Easy solution is to sell a plan that explicitly allows third-party tool usage. Then they get the money and the users get the tooling LinkedIn is incapable of building themselves.
(except they won't, because they're not after money but engagement, and their built-in tools suck on purpose to maximize wasted time)
