No founder would be willing to pitch to the general public. Companies are providing very private information (economics, stats, etc) that should not be made public.
I and several other founders are doing this on the Pioneer livestream next week. It's earlier stage than most YC companies but not afraid of a little transparency https://pioneer.app/livestream
In fact, there are whole communities built around publicly sharing your companies' financial metrics. Eg https://www.indiehackers.com/products