The conclusions you're taking from the North Hollywood shootout aren't what most of the police world took from it. The police had .38 special revolvers and shot

The conclusions you're taking from the North Hollywood shootout aren't what most of the police world took from it. The police had .38 special revolvers and shotguns and were confronted with people with rifles. Someone with a rifle is going to be able to effectively engage someone long before someone with a revolver or a shotgun gets into effective range. Also, .38 special isn't very effective against ballistic vests, which the robbers had. And suppressive fire (from the illegally modified AK variant rifle) limits an adversary's tactical options. The conclusion that police generally came to afterwards was that officers should have rifles available to use in such situations. Have you ever shot a rifle with a detachable magazine? And practiced magazine changes? Because it seems to be universally accepted among those who do such things that magazine changes are more of an annoyance than a hindrance.