We’ve once received an investor offer from a major studio for our game we are making since college in our free time, but the catch was that they wanted us to implement online multiplayer into a coop-only top-down shooter we’ve been actively making in our free time for the past 4 years at that point.
We ultimately rejected the offer, even though we managed to get a prototype working. MP is such a pain to implement in the first place, and adding it into an almost finished game is near impossible. But, if you ever resume the project you’ve scratched due to unet being awfull, I highly recommend checking out Mirror. It’s free, open-source and has an amazing Discord community - every time I had an issue or needed help with something, there was someone willing to help me there.