[devnullbrain]

>The people who will see you as an enemy are at a dead end anyway and not likely to ever have any influence over you.

That's more idealistic than my experience. I've seen team leads with a very strong sense of ownership. Also, if their mistake is responsible for a 6-figure overspend, it's better for them for it to remain hidden than to be revealed by someone else (especially a non-expert).

[brodouevencode]

1. On a long enough time line those people will weed themselves out.

2. It's a good thing for team leads to own their work, but if they're not comfortable with people poking around then they seem to be hiding something, and in that case I'll default back to the first point.