I tend to agree with you - a rising tide lifts all boats and I want my team to be a rising tide. If I'm at a startup and I'm confident my tool is a good fit for what the rest of the team is doing and there's a genuine teamwork dynamic, oh absolutely I share things like this.

But when I've been stuck for a while in a dysfunctional team, I've definitely seen the flip side where other people will find ways to take a lot of credit for minor iterations on my work, where management will reward my productivity with high expectations and high pressure to continue the trajectory they perceive in a single idea, and when the tool becomes a support burden because too many people think it should solve all of their other problems too and I'm now perceived as being the owner of this thing they depend on.