Why Hamas doesn't allow new foods into Gaza

Firas Press reports that Hamas is refusing to allow shipments into Gaza of cheese, milk, juices, detergents, soft drinks and biscuits - items that up until now had been restricted.

The reason? According to the article, factory owners are pressuring the de facto Hamas government not to allow these items in. because those imports would compete with their factories, hurting the Gaza economy and (they say) forcing them to lay off workers.

My guess is that taxes going to prop up the Hamas government has something to do with this as well...