Practically it's impossible to own Bitcoin by everyone because there are many barriers. If someone own few Satoshi it's still like owning Bitcoin. I don't think topic is useful and a matter of discussion but if would be better to discuss about maximizing Bitcoin adoption.
Why everyone can't have Bitcoin?

• Everyone in the world don't have internet connection and knowledge about internet and digital technologies.
• Even some of country don't have electricity in all area and it's a must to use Bitcoin also internet connection.
• Everyone will not be interested to use or to like Bitcoin and no one can force them.
  
• Even some will not like to have Bitcoin because of its higher transection fees and some dislike it because of its volatile nature but it's a properties of Bitcoin.
• It's still illigal in most of the countries and government discourage to use it. If they legalize it many people will be involved with it and mass adoption will increase but practically it's not possible to own it by everyone because it's just an imagination and illogical.