Why does CT corp charge startups $213.74 annually?

This is the company that YC recommends their companies use to incorporate in the state of delaware. I can't figure out what they do exactly but they send us a bill for $213.74 every year threatening that if we don't pay it this "may impact the company's authorization to do business. Please consider the legal consequences of CT's discontinuance." If there are 40 YC companies a year and these guys make ~$200 off each one, they are getting $8000 from the pockets of YC companies for doing nothing! Can someone please tell me why we should have to pay these jokers?