[jmrobertson]

That takes some faith that being an unselfish team player will in fact get you somewhere.

From a mgmt perspective, assuming a good manager, it does.

If your team/org doesn't approach it that way, the solution is find a high performing team that does approach it that way, not become toxic yourself. 10/10 high performance, long term successful teams approach things this way (source: this study, and people who have experienced this approach luckily).

[maxxxxx]

"That takes some faith that being an unselfish team player will in fact get you somewhere."

From my experience in most cases it's not getting you anywhere. You will just be taken as granted.