Longboards use larger wheels and wider trucks to clear the board of any wheel bite. Some even cut out that area of the board. For skateboarding, you need that area for stability, flip tricks, and landings.
The physics of it all is what’s so awesome about it.
Good quality skates have pivot pins whose length is adjustable. I don't know if skateboard trucks generally have this feature.
You tighten and loosen the pressure on the kingpin rubber bushings by shortening and lengthening the kingpin in order to adjust resistance for cornering. When you do that, you also need to be able to adjust the length of the pivot pin. Otherwise, lengthening the kingpin results in a pivot pin that's not resting properly in its cup. You want it just touching, not floating out of the cup or exerting a lot of pressure on the cup.
Good quality roller skate truck pivot pins end in a spherical ball and the pivot pin cup on the truck is also spherically machined. There's no bushing in the cup.
Kingpin angle affects cornering ability. Kingpins at higher angle from vertical corner more sharply, so skaters doing figures tend to prefer more vertical kingpins than dance skaters, who want to be able to do deep curves. For instance, kingpin angle is the major difference between Snyder Super Deluxe and Imperial plates.
Durability is a serious consideration for roller skating kingpin angles. It's painful when a kingpin breaks and more common with less vertical kingpins, so most skaters doing freestyle will choose a plate with kingpins closer to vertical. Roller skate plates also often have a "jump bar" connecting the two trucks to decrease the chance that a kingpin will break when a jump is landed. Sometimes even a jump bar breaks.