Investing heavily in Palestine is likely Israel’s cheapest option for stability in the long term. They certainly aren’t going to bomb their way to stability.
If they had gone after Hamas leadership specifically with targeted operations while increasing humanitarian aid, rather than terrorizing the entire population of Gaza, they would have had the world and likely a decent percentage of Palestinians on their side. Instead they have utterly and completely botched it and put themselves in a terrible situation strategically.
Even that is non trivial. Money going into Gaza first goes through Hamas. After buying arms and building expensive tunnels, and paying its men, the leftovers go to the rest of the population.
The aid was going first to fighters, then to stockpiles, then to the people. To the extent it could be traded for weapons it was. Now we’re seeing allegations UNRWA employees participated in the October 7th attacks [1].
[1] https://www.nytimes.com/2024/01/26/world/middleeast/un-aid-i...
If the humanitarian aid organisations themselves are Hamas, then you could just arrest them.