Remember the Oil Embargo?
Carter deregulated over 70 Industries and the economy still took a VERY long time to recover.
Then Senior Bush flushed it right down the toilet again.
One thing Carter didn't deregulate was government controls on the price of domestic oil, and the federal government took over control of allocating gasoline supplies.
What Carter undid with one hand, he redid in spades with the other.
When Reagan deregulated the price of oil it went to under $10/bbl. The economy boomed as a result.