In this context, crowdfunding is a large group of people pooling small amounts of money for an equity stake. This is relatively new and it hasn't been done yet. The OP was basically asking if there would be a new YC fund that would be open for the masses to 'micro invest' in.

This is in contrast to Kickstarter is crowdfunding where you pre-order the product.

I guess the investment part is a bit crazy (how would you even manage having thousands of "investors"), but the pre-payment part doesn't seem to be.

You can do that today without selling equity.