That requirement was set when eth was $7 per coin...will most likely be under 100 coins if price remains where it is.
It's not related to price, its related to the scalability of the Ethereum platform prior to sharding being implemented. They just wont be able to support a huge number of stakers who are staking small amounts of ETH.
I believe the minimum threshold is likely to be in the ~1000-1500 ETH range initially. There will be 'staking pools' to enable participation by those who hold less than the minimum threshold (RocketPool as a leading example).
At the end of the day there will be options to syndicate, it is particularly easy with smart contracts. I would not worry too much about the minimun requirement, as it would be agains the value of the currency to loose the small currency owners.