The Sharks do a lot of business with mass consumer retail, so they are well connected. They have existing businesses. E.g. selling on QVC. Not sure if the Silicon Valley investors deal with that kind of stuff? Maybe the YC MO is to let the founder figure that out (so basically the founder is treated less with kid gloves). The sharks do ask for lower valuations than other investors so that kind of goes hand in hand.

I am not an expert in this area, this is more of an armchair comment / question.