It seems very odd that the Founders intended to create a right to own personal firearms at a time when this was simply the common case and there was no one advocating a prohibition of personal firearms, which, being black powder single shot arms, had certain inherent limitations on the threat that could be presented by an individual or small group of individuals. I believe the fledgling gubmit frowned on the personal ownership of cannons, but I don't feel like digging this up. It is doubly odd that if their intent was to protect personal firearms ownership they just didn't say so, instead of writing a terse statement about militias. The whole point is moot at this time. I think SCOTUS saw ruling other than they did was a political impossibility. Note, however, they were careful to state arms ownership is not an unlimited right.