You wouldn't need to get rid of the current limits, just expire the patent sooner. If a company generates $10 Billion dollars in the first 5 years of their 20

You wouldn't need to get rid of the current limits, just expire the patent sooner. If a company generates $10 Billion dollars in the first 5 years of their 20 year patent the reminding 15 years isn't necessary to incentivize innovation. Rewarding innovation has been archived, just skip ahead to the part where the public at large benefits.