It's being downvoted because it represents intellectually dishonest argument (missing the obvious problem with monopolies/cartels) while using "free-market" (the term with positive connotations for most people) to justify it. It doesn't help that this argument is main talking point of neo-liberal propaganda which make a lot of people's blood boil so it's difficult to resist emotional downvote.

Thanks, just to clarify I'm against unions as they come with a large political power which I think is undeserved.

My statement merely aims to say that I don't think there is anything currently wrong. These companies make billions. They could easily afford to pay larger salaries. Why should they if people will work for less? Why isn't everyone's salary like Eric Schmidt?

To expand a bit on the thought of unions in the Software industry...

Step 0 would be to convince software engineers that other software engineers who don't perform up to the same level as them should be protected for the good of the working-class engineer, instead of kicked to the curb to make room for a more productive engineer.

A bit of a hard sell, as engineers tend to see themselves as co-owners of the solutions they create and hate to see their work fail to launch because they're saddled with bad coworkers.