A recipe for expensive mediocrity: having to convince everyone it's a good idea.
Game-changing ideas are basically impossible in this situation.
A game-changing idea fundamentally will have at least some concrete downside from the status quo, and might have upside (and sometimes that upside turns out to be transformative).
A few places this dynamic shows up:
Large companies with bottom-up cultures
Peer review of academic papers
A better goal is: "no one thinks this will kill us and at least one person thinks it will be actively great"
In an environment that is amenable to experiments, this is a much better goal and more likely to find great things that work.
You can also invest time and effort to build guardrails to reduce the cost/danger of the average experiment, allowing you to do more of them.