That probably explains why "other engineering disciplines" do not have as many startups as software. If you do not like the current place and its values why do you hold others and its owners hostage to your ideals? Why not start a new one and attract better talent with your better values.
Tech companies are trying to do something better than what previous generations could do.
And maybe tech unions- call them guilds or free associations or hacker collectives if you can't stomach the term- can do labor relations better than what previous unions could do, as well.
Tech companies are trying to do something better than what previous generations could do.