Federal Court decisions are only binding on their districts (it can be used as precedent in other districts, but those courts don't have to follow the ruling). If it goes up on appeal, it can become binding across the states in that circuit, but it won't become binding across the nation until the SCOTUS rules on it.OK, so if the Federal courts slapped down ATF rules on Bump-stocks, then why isn't the market flooded with them? Why aren't gun accessory manufacturers pumping them out to the retailer? Obviously being slapped down by Federal court(s) didn't do a damn thing, did it, so the rules still apparently stand!
Right now, even if the rulings prohibited the ATF from enforcing the bump stock ban nationwide, that's not sufficient for a business to run the risk of producing bump stocks--this is still early in the process and those rulings could be overturned on appeal, leaving them way up the proverbial creek if they had started up production. They may also not be located within the jurisdiction of the courts that made the rulings, so the ban could still be in force where they are.
There are also pesky things like patents and trademarks that could prevent the market from being flooded.