It was mostly policy. France did later become much more interested in settling people abroad, with Louis XVI sending thousands to Guyana and even later Charles X initiating the settlement of Algeria. Maybe have Louis XV die sooner so he can stop gimping France's colonies, but either way future French governments will be sending people to settle other places, and New France would easily be the best option for resettlement.It's not like the French didn't have tons of land in the New World and the population (like a quarter of all of Europe's, at that point) to settle it prior to both of those, yet the French colonies were far less densely populated than the English colonies in the Americas despite England having a far lower population in general than France during the pre-Industrial period. Even with a French victory and continuing primogeniture, there would need to be something else, I wager.
New France was a negative investment because it was so severely underpopulated relative to its size. Making it more than just an over grown series of fur trading posts and making it able to handle its own defence will drastically reduce government expenditures. Additionally not all of them need to be people who were productive in France, the Kingdom of France already kept its prisoners on ships and may as well send them somewhere.... and how do you plan on making that populating of the land profitable?
How would that balance with the things you mentioned? Probably wouldn't, given that it was actually rare for any colony to be a profitable venture I don't think it matters.