even though i am out of LGB-track and track-power (RC-battery), i had some bad experiences a while ago (which lead in some way to the RC decission).
If u run your trains track-powered (what is generally "normal"), it is a good investment to use better joints than the LGB ones.
Track "works" with different weatherconditions, and everything else than a fixed joint will tend to "wander off".
Joints with screws in nearly any way seem to do a much better job and will be definitely better in running current along the line.
There are some systems along, most of them with the disadvantage of relatively high costs.
Even though i dont need current flow on track, i use the nraly original method with brass plates (4-hole), drilled rail ends and then fitted with nuts and bolts.
Difficult and fizzeling in building, but relatively cheap and reliable.
No need of fixing the sleepers.
Surely...those things are always a kind of "big business". And fixing track in another way may work.....
....it depends on what u want to have.
For a trackpowered outdoor-layout, a plug-and-play-solution will need properly fixed joints and nicle-plated rails.
All other kind of operations-philosophy will allow the "easy way" (e.g.: "a realistic railroad needs realistic maintenance of way...")
greetings
Frank