Can anyone opt out?
Only domain name holders that are non-trading individuals can opt out of having their address details published on the WHOIS. In other words, if you do not use or plan to use your domain name for business, trade (this includes the registration of domain names for monetization purposes, e.g. pay per click advertising etc) or professional transactions, you will be entitled to opt out of having your address displayed.
If you are a non-trading individual and your web site is being used as a holding page by your registrar, you will qualify to opt out of having your address shown on the WHOIS.