I am angry with this pessimistic outlook of mine. A threadripper is now known to be able to hash around 1200 h/s, which is roughly equals to US$ 2 per day mining cryptonight algos.
and Vega can do Cryptonight algo at 2000 h/s each which translates to 4 US$ per day.
So a TR with four Vega can do around 9200 h/s which translates to around US$ 18 per day.
That kind of system requires close to 1200 watt of powers which cost around US$ 3.5 per day (at 12 cents per kwh).
Now if only I can get four dual slot custom cooler Vega 56