Yes it is finally coming down. It does not make sense at $20. There is no value currenctly in owning this currency other than the long term potential if it does ever make a valid currency.
If you are willing to wait some years and hold it as an investment, it should be priced less than $10 dollars because of the high risk of it failing.
Who ever pays $20 or higher now as a long term investment is way overpaying because of all the risk.
It should keep falling down to less than $10.
Less than $10 with the current difficulty lvl ?
Remember that miners are the biggest source of bitcoins in this moment. I'm sure they aren't willing to lose cash.
it's not up to them...