There is no contest: it is the environment where frequent, uncensored criticism is tolerated or even encouraged. That guy who is silently working on their own solution? Without listening to feedback from his peers (or, more likely, his betters) his work is probably junk that nobody wants or worse - something that will cause more problems than it solves.
Before I worked in software I noticed companies would have two cultures. A "shop" culture where workers can wear casual clothes, swear, kick stuff, and at the end of the day, get things working, and the "front office" that focused on sales. You never knew if a client was on the phone or in the office so workers dressed well and any negative speech was strictly forbidden.
Because programmers work at a desk, they are shoehorned into front office culture. This has probably done more harm to the productivity of software projects than any other factor. Just this year I watched a small software project (one that a small team of competent developers, QA, and a BA could have completed in several weeks) waste millions of dollars (some say hundreds of millions - the real figure (in the true spirit of front office culture) would be "rude" to tell) before being cancelled. I saw this train wreck coming a mile away and documented the issues and forwarded them to my supervisor but it made no difference. In defense of the company I work for, at least they didn't fire me. It is pure front office culture to blame the whistle blowers for failure.
And don't even start with "Oh, you just need to say it in the nicest, politest manner!" There is no way to tell somebody they are wrong and have to change in a "nice" way. Your organization either can focus on the quality of the end product and encourage criticism or focus on appearance and censor it. But if you choose the latter, unless your project is a con, it is doomed from the start.