You could look at West Bank and arrive at a conclusion that laying down arms did not end the occupation, not the colonisation. Neither the different rules for Palestininas and Israelis.
And? Ending the occupation isn't on the table, at least not by Hamas force of arms. Militarily, the conflict has been catastrophic for them. Every day they delay surrender, more civilians will die. Strictly through a military lens, they should end combat immediately.
The alternative argument seems to be that Hamas should sacrifice Gazan civilians to make a moral point. There's a scene in Shrek about that kind of logic.