I guess the Mobs different/current businesses would be around construction, prostitution, pornography, protection, fencing goods/loads, illegal gambling/sports betting, loan sharking. (Feel free to jump on board and name others).
What other things are prominent for the mob these days?
There are a few things I don't understand...

I'm not entirley sure about 'No-Show' jobs? What exactly are they and how do you make money from them?

Construction, is it because they control/influence unions (e.g. take strike action etc if they don't get their way/price)?