His kind of impact is that he showed that laws cannot be made that go against the will of the people.
It started with the Halstead act which banned alcohol but people wanted alcohol. So Capone and the others stepped in to do something about it.
They didn't see the illegality that they were breaking the law yet the people wanted these products and did find no harm in alcohol. So after making alcohol illegal again did the gang disappear.
The excessive money spending by the government. There is no free lunch. If the government spend too much money in something, it is not going to have money to attend other needs.
