I think that regulation is something that is inevitable and more and more countries will decide to regulate Bitcoin in some way. But I don't think that regulation is equal to centralization. Bitcoin can be regulated and decentralized at the same time.
Regulation means seting some rules how Bitcoin should be treated, what is legal and what isn't, how it should be fitted into financial framework.
I think that regulation could strengthen Bitcoin and help it to be more accepted, we don't have to be afraid of that.
I totally disagree to that, regulation is not equals to decentralization but will finally lead it to centralization. The way most government view bitcoin is not the same we investors may view it. They may claim to regulate bitcoin but end up placing rules and law that will place bitcoin into the hands of the riches; there won't be normal circulation of bitcoin the way it is now.