I think there will be more investors like professional managed funds or even retirement funds which will invest into ICOs. The prices for ICOs will then become even more expensive and make it more difficult to make profits for small investors.
It depends on what is really planned :
- If regulation comes to really protect citizens and investors against scam et fraud, this is actually a good thing.
- If regulation comes to control citizens, fight against cryptocurrencies to maintain the government's strength (central bank's power, centralized companies...), this is not interesting at all.
For now, cryptocurrencies world is a bit like the Far West...