The ability of Hamas to effectively strike at Israel from Gaza is very limited. The rockets make headlines, but Jewish casualties will continue to remain light. On the other hand, IDF missile strikes are precisely assigned to visible targets, who have nowhere safe to hide. The IDF sees Hamas, but Hamas cannot see them. These are very favorable conditions for the IDF. It's in Israel's best interest to maintain the current strategy, while Hamas will attempt to level the playing field by dragging the IDF into Gaza and widen the conflict.
Turkish warplanes attack PKK targets after soldier killed in attack (Reuters)
from the article: U.S. lauds Israeli restraint in face of Qassam rocket attacks