At the end of the video he says that he estimates the transit toll for his ship to be around 200,000$. Wow!
Maintaining the channel seems to be a lot of work... like when ships crash into the bank and block it.
If the toll is deemed to be too high a vessel always has the option of going around the Cape.
Realistically it's always an option but the added time plus the additional wear on a vessel makes it undesirable.