"You're showing a common, fundamental misunderstanding of price and value.
A price is a ratio between two assets. The ratio reflects the current value of both assets on the open market, not just one.
What would you like to see Monero "stable" against? the US Dollar? the Venezuelan peso? the Euro? the Kenyan Shilling? Understand that those things only appear stable because everything is priced against them. They arent stable at all. When the price of gold goes up, is it gold going up or the value of the money used to price gold going down? Look at a chart of salt prices over the last 10 years and you'll see lots of fluctuation. Salt is probably the most stable comodity there is.
There really is no such thing as price stability. Not really. Not in any asset in an economy or market that isnt centrally controlled. And this never works because artificially controlling price decouples price from value, and you wind up with forcibly over or under valued assets and problems from that. Look at the black market vs official price of many national currencies for an example of how bad this can be. Or look at NuBits.
The volatility will decrease as these assets move from primarily speculative investments to long term investments or currencies. This is just a part of the price discovery process for the asset, it occurs with every new asset class.
Beyond that, things like pegging an asset to another make the pegged asset vulnerable to manipulation of another. Why would you want an asset pegged to something issued on bond by some guys in a room? Not to mention the decoupling of price and value above that can occur depending on the pegging mechanism.
So i guess my answer to your final question would be, this isn't a problem like you envision it, and only time will fix it." https://www.reddit.com/r/Monero/comments/a7wirz/volatility_of_monero/