So when was the last time you had problems with your mags. When was the last time you had your 500hourly service done on the and or o/h. The mag is compact light and extremely reliable if service correctly. Then it's main thing is the fact that it is NOT religant on anything other than the engine turning. And unless you have a gstio 520/550 access is relatively easy. This constant push towards everything new because you have to have it is really unnessary. For most of you that would be lucky to fly 100 hours a year are happy to pay the extra cost involved in supporting the new gear. I would think not.
Things in the motor industry decrease in cost due to the amount of production and atomization. We how ever can't use this. Our aircraft and engines are all hand assembled and as such they can't compete.
Is it really required we change for change stake. And as for a top fuel car useing one rpm yeh sort of but the point is the energy that the mag makes can't be done via electronics for the same weight. And I guess your aircraft while in cruse your not operating a set rpm are you.
Nothing in aviation ever decreases in price. With expection to some after market gear PMA that sell at a reduce cost to original manufactures.