My career is in HR Talent Management, and I've had to sit back and watch LinkedIn take over both recruiting and development in all organizations I've worked in over the last decade. Like it or not, if you want a corpo job these days, it's more or less imperative to interact with it in one way or another.
Micro$oft paid $26 Billion to purchase LI, and you best believe they work tirelessly to ensure businesses are not only reliant on their productivity software suite and operating systems, but also now for their their social media presence, recruitment, and development functions. MS makes over $15 billion a year in revenue off of the platform - $7 Billion from recruitment fees alone. It's absolutely insane.
LinkedIn is the very definition of a stinking cesspool of corporate greed and mediocrity.