Egypt should do that...open the gates. Why on earth would a country that has just had so many people brutally murdered open its gates to its enemy? You cannot be serious! The land immediately around Gaza is where the kibbutz were/are in which people were slaughtered in their homes.
All military operations begin from the air. No army is going to send in its troops without trying to secure an area first. That would also be madness. Their troops would just be sitting targets. Which other army would you expect to do this?
250,000 Israelis have also been diplscaed due to the rocket launches that come over in their hundreds everyday from Hamas and Hezbollah. At least Israel builds shelters and safe rooms in homes for its citizens, unlike Hamas. Golda Meir said that when " they love their children more than they hate us there can be peace". that is not to say that Palestininans don't love their children, but that making hatred of Israel and jihad towards Jews a central plank of their identity there can never be peace or prosperity for their children.
The only solution is for a cease to calls for the elimination of Israel. Its existence cannot be continually denied. It was the PLO that rejected a two state solution of multiples of occasions. Israel with drew from Gaza in 2005, forcefully removing its own people. What has Hamas been doing since?
Israel is a successful, modern economy with a full range of civil rights for its citizens, and its also provides work for many Palestinians. It provides a home not just for Jewish people, who have been persecuted and expelled and subject to literal genocide for centuries, but for other communities too; but the whole point of it is to have a Jewish focus. it is a tiny Jewish state in a vast arab muslim region. Islamic fundamentalists are never going to accept living in a state with a Jewish focus.
If the Palestinians hadn't been so troublesome and anarchic they wouldn't have been expelled from Kuwait ( 400,000 in 1991) where they supported Saddam Hussain's invasion; or from Lebanon, where they instigated a civil war; or from Jordan where they attempted to asssasinnate the King and waged a war of terror.