I don't see any problem with having a lot of smart contracts as long as it will not have an effect to the market circulation. Well, it is still the most popular smart contracts will dominate the market.
Some people may feel bad to see that caused by there will be lots of competitions between any smartcontract platforms, Remember when the new developers will have needed more and mroe money to develop the new smartcontract. When this will become a failed project and the money will be wasted. We can think if that will much better to be allocated into the development for the new innovation.
This must become the main concern by some people in this time. I think that if a lot of smartcontract platforms were good but this is also having cons.