No, not the vox mercati part. That’s easy.

The hard part is how to let someone know they’re wrong. You may feel you’ve arrived as a PM when you can do what you described, but it might also be a way to learn when you’re departing. As in “soon”.

Might I propose that it is every executive’s right to state what the market needs, what the company should build, the dynamics of the market, whatever.

It is the responsibility of the executive team to evaluate that input – along with all other input – to arrive at a decision.

Be an advocate of your evidence – not yourself. Challenge the evidence others bring – don’t challenge them. It’s easy to distract people from an objective analysis of market facts – so don’t distract them.

So instead of “you’re wrong”, try “the evidence I’ve gathered shows x”. Let them challenge your methods, your sources, that’s OK – they should be unimpeachable.

Perhaps you might even ask the individual espousing ideas you don’t agree with there those ideas came from – what’s their evidence? What are their methods & sources?

Politics are the science of getting along in the sandbox.