It wasn't because he wasn't from here, so he didn't care.

It was because Qingning Road involved the interests of hundreds of thousands, even millions of people. A few groups wanting to take it over wouldn't find it that easy.

Didn't you see that even after this place became prosperous, the government didn't come to reclaim it?

Trying to take it for themselves without any effort would require asking those with vested interests in Qingning Road if they agreed.