We're in Belgium, which determines the main part of our question.
My friend and I have an idea that could have a nice future.
At the current stage it's just that, an idea.
My friend wants to go and get a patent in his name (it was his idea), and then start a company together, to THEN build the product.
This requires investment much larger than I can contribute (€5k), which would shit the company from a 50-50 split (me being the technical person, he being the one with the idea and money) to something which I think would not be good for me.
In Belgium there exists the option to start a BVBA, which takes around €18k, or we can start an NV, which takes ~ €60k.
I think it's completely crazy to invest all this money without even having a prototype or any non-paying customers.
On the other hand, I don't know how we could make something that people are willing to pay for without actually charging them and having them pay, without such an investment.
My thought would be to first create a prototype, get feedback and non-paying customers, to finally start a company and charge people.
I basically have 2 fears:
1) invest money without having 1 customer or even 1 user
2) get shafted (see: jobs & wozniak)
So who do I talk to, what do I research?
Ideas are worth $0. Nevermind you'll switch the idea to something else.
And the type of person who wants to a get patent first instead of getting users is precisely the kind of person you shouldn't be starting a company with. A patent won't get you customers. How many companies can you friend name that lost to another company because of a patent rather than a thousand other reasons?
Both your fears are valid. Trust your gut. My suggestion: don't start a company with this friend.