Why not just limit patents to 3 years before they expire.
In today's world this should be all you need to pay for the research and go from startup to established company.
Some products take much longer to develop. A drug or medical device can easily take 10 years from concept/ip filing to hit market.
Other products have slow uptake. If you make a novel product with growing users, Google shouldn't be able to clone it at 3 years and push it to a billion of their users.
Other products have slow uptake. If you make a novel product with growing users, Google shouldn't be able to clone it at 3 years and push it to a billion of their users.