If I may interject on the topic of NSS... it does exist but, IMO, without some sort of NSS there wouldn't be a market for stocks like OPMG. MMs play a huge part too but, without them there would, again, be no market.
MMs are constantly taking orders from traders and even accept trades from other MMs but, without all of that, there would be no market for penny stocks.
NSS exists but it's not running rampant like it did when Patrick Byrne was trying to run a thriving OTC company...
This is not a big deal and no one is gonna get super rich from OPMG being shorted.
This...
The basic form of short selling is selling stock that you borrow from an OWNER and do not own yourself. In essence, you deliver the borrowed shares. Another form is to sell stock that you do not own and are not borrowing from someone. Here you owe the shorted shares to the buyer but "fail to deliver." This form is called naked short selling. These short sales are almost always done only by options market makers because they allegedly need to in order to maintain liquidity in the options markets. However, these options market makers are often the brokers or large hedge funds, who abuse the options market maker exemption.