Actually realising projects is very good for politicians because in the end what they want is to be elected and pleasing your electors is a very good way to get votes in your favor. As for lobbyists, the companies still get money to realize projects that will be profitable to them in the long run, sure it’s not the same as getting the money while not realizing the project but that’s an issue with the system itself (money should be refunding the project cost, not financing it).