I don't agred with you that regulations are good for cryptocurrency ICO and obviously, crypto are not meant for any kind of regulation -call it good or bad regulations, the bottom line is that bitcoin and altcoins regulations will affect Cryptocurrency usage because this is a peer to peer decentralized blockchain that does not require regulations by any persons or group of persons.
Now these are some examples on attempts by governments to regulate Cryptocurrency.
In December 2013, the Chinese government banned financial institutions from using bitcoin, causing a downturn in the cryptocurrency's value that would set a precedent for its worth over the coming years. Less than a year later, in April 2014, several Chinese bitcoin exchanges had their bank accounts closed. That spurred concern that government oversight limiting access to fiat currency (traditional, 'real world' currency) could be lead a wave of future regulations to curtail bitcoin's growth. Yet loopholes in the crackdown meant many exchanges stayed in business, and bitcoins price rose some 25 percent in the 10 days that followed.
Again ,
the U.S. has made localized attempts to regulate specific aspects of bitcoin. New York State requires a "BitLicense" for bitcoin related businesses, with specific rules for employee vetting and identification. Just last month, the IRS won a landmark ruling to gain access to information about 14,000 historic Coinbase accounts, in an attempt to gather back taxes from owners.
While some of those instances are more concerning than others, none of it has stopped bitcoins growth. That reveals the flaws of any future attempts to crack down on bitcoins use.