So how would the government now incentivize things it wants and disincentives things it doesn't want? Most recently I improved insulation at my house. I was su

So how would the government now incentivize things it wants and disincentives things it doesn't want? Most recently I improved insulation at my house. I was surprised to see an IRS form that gives me tax advantages for making my home more energy efficient. How would the government now do this?