Thanks for your reply. It was fascinating to know. Indeed, it is essential to get support from such a big giant. When the amount needed for a startup includes such serious numbers, they probably developed something very cool. I'm also working on a new startup, and I worry a lot if I find sponsors. So I ordered on https://sturppy.com/models/financial-model-for-saas a saas financial model for planning created strictly for subscription businesses. I approached the business plan and preliminary calculation very responsibly, and therefore I attracted professionals to help. Of course, my project is not so ambitious, but I hope it will be a success.