I do not think it is good if too many coins keep coming in a short span of time. Many times people cannot uphold a coin for a long time and it ends up into oblivion. There are some scammers too who pop up at times.
These can be avoided if the introduction of a coin is regularized. However, this is not easy and it comes as a collective responsibility of our crypto community.
When there are way too many coins fighting to occupy space and success it may not be conducive to the digital market. The demand for only one existing coin may be so much that the others will have to be withdrawn from the race because there is equal distrust with all new coins.
When a structure comes into existence and when there is a serious regulation in place then I feel doors will be automatically opened for new coins. There should be a balance and investment should be made after thorough analysis of the ICOs.
A lot of ISO is definitely good. Thanks to this, the crypto-currency market is very competitive. Due to their competitiveness, crypto-currencies are developing, hence capitalization is growing.
There advantages and disadvantages with this events that continues to happen. ICO's are good but a lot of times it is abused and used on illegal ways like scamming and other stuffs. I agree that it should be regulated but I think it is impossible to do.