I don't know in what aspects of trading or finance that collaboration is necessary (rather than applied game theory towards each other).
Trading and finance are interesting examples, because those are two places where a lot of money-driven students would go, before tech jobs because easy money (rather than something nerds did for the love of it).
Rather than "Greed is Good" Wall Street thinking take over, we should say "Fine, we admit it, tech pays good money right now, but we do our best work by working as a team, and that's how we're going to do it."
Then we follow through by making the messaging consistent in offers, raises, bonuses, performance evaluations, promotions, project management, metrics, etc.
Lets not get carried away thinking we are specially noble.
The guy in Nebraska maintaining one of key dependencies of your project thanklessly disagrees[1].
Well, we build stuff. we praise the knowledge. We were called geeks, hackers, etc. I can just compare software engineering with science like math, * engineering, physics.
Finance market as put by the other contributor, is just what we are not, and why Linux exists, why FOSS exists, why internet exists and services like github, trello, gmail exists (even though you want to scream at me, they are there for profit, they were all created with one goal in common: Collaborate openly with others). Egoist finance sharks aren't example of success, virtue and happy life, no matter what.
That's not the conclusion, unless you think that Class Warfare plays a role anywhere. I don't.
If you speak to people who work in trading or finance, they do none of those things. They view each other as conpetitors and don't help each other. They aim to outgame and outdo each-other.
The culture in software is very different to most other industries. But if you look at other fields of engineering, you don't see people stepping outside their roles as much.