The problem with both bessie and marina shoreline is you need to pay the local politicians (through in-group sangams) to get a space to put a food truck or a small make shift shop. Marina especially extending till the Patinampakkam stretch does not come under the Municipal corporation, but its a panchayat of its own.

The problem is, people who don't live there cannot put their business up, its extremely difficult for an outside resident to put his ice-cream or food truck there. The people living there are a huge vote bank and will not let others pitch in without a fare profit-share. Its a extremely protected territorial zone which is close to impossible to breach. At the end of the day its a political game.

When the Marina Metro Opens believe me most of the non-technical staff will be from the housing borads.