I actually hope “product people” won’t be involved as long as possible. “Product people” is mostly a reason of our current state of enshitification of most of the products. I would actually try my best to gatekeep.
Ubuntu is a good example of why you don't let "product people" near the thing, Ubuntu is not even remotely the most noob appropriate distro but costs on marketting. As for SteamOS, Valve does many things which everybody else fails at, so they're not a good model for typical outcomes.
Do we think these companies aren't selling anything??