Yes, if you have a business account with an exchange you can make large otc purchases with out market swings.
Discussion
No doubt. Still think it’s gonna require more than what the OTC can even give.
One could try to buy directly from large miners as well but I’m not really sure if that’s still an option.
After that tho & price pumps I’m sure people will sell so exchanges will be able to handle otc buys as again.
ETFs ain’t going d2d for btc