I rather want to see that there is no single wallet holding greater or equal to1BTC so that we can say that we are really approaching mass adoption which the BTC main objective.
Well seeing no single wallet exceeding 1 bitcoin is impossible since there are tons of whales that hold thousands if not hundreds of bitcoin.
In my experience, it is not easy to earn 1 bitcoin so I think most of them are investors.
It is indeed not easy to earn 1 bitcoin if you are not willing to invest some money in and you want all free money from bitcoin especially if you will be dependant on faucets and some sites that giveaway bitcoin. But being an investor specially a big one 1 bitcoin will just a piece of cake to you.