Is OTC beneficial for large-scale traders i.e. sharks or whales; whatever you want to call them or is it a safe haven for small traders.
Beneficial in a sense that it won't affect the price specially if you are buying huge amount of bitcoin. Of course there is the privacy in which whales wanted to keep as a safe guard for them.
This has been practice by whales as reported, and if you guys remember, at the height of China's crackdown, many Chinese do OTC trades as well. And as far as I know, many Chinese miners are liquidating their
BTC holdings as to not have put a dent on the price and cause panic to the market.
I haven't heard any small traders doing some OTC, small traders or average joe's just go to the usual route and it makes them comfortable as opposed to some big entities who's moving huge amount of bitcoin in the market and OTC is the best way for them.
Of course, small fishes will not get the benefits of OTC, it doesn't make sense at all.