Quoted from PPS:Yes, and don't forget those capacitors on those 15 year old boards and other components which give out. Capacitors only have a finite life. Additionally alot easier to fry transistors on these games. Does everyone do the same logic when they buy a TV, Microwave, DVD player, Washer, Dryer, Car, etc - all with SMD components - that it's more reliable to buy a 15 year old version of these?
Cargument...appliancegument...it's all the same.
None of the things you listed are pinball machines, and that logic doesn't apply to them. All of those things - after 15 years of regular use - are disposed of and replaced, as the expense of keeping them running is not acceptable and it's easier and cheaper to replace them. The same is not true with a pinball machine.
We KNOW how reliable a WPC machine is 15 years later, especially after a bare minimum of work is done making the boards like new (and if you are too lazy to do it, $100 will get it done by any number of reliable board guys). And most people have decided that level of reliability is acceptable and desirable.
We have no idea how the new ones are going to hold up, if parts will be available, if the design will turn out to be solid.
Lots of question marks that have nothing to do with microwaves or cars.