Could the Allies have continued at Gallipoli?

Could the Anglo-French force have continued towards the Sea of Marmara despite the casualties at Gallipoli?

It could have tried, but the leadership was no longer willing to accept more casualties.

Operational possibility differed from political willingness. The Anglo-French force could still have tried to press towards the Sea of Marmara despite its losses. Its leaders no longer wished to incur further casualties, so that possibility did not lead to another attempt. The campaign had reached a political limit before every operational option disappeared.