Quoted from MightyGrave:

You don't need to fear Spike systems. It's the state of the art . this progresses more and more with some benefits like smaller parts, less heat, less cooling needed, less parts needed, better sound, better using of the components.
And if there is a malfunction you will find someone who can repair the SMD technic.
Look in a WPC95 Backbox so many boards, heatsinks, wires and stuff...
Why not use the modern technic to create some New, fresh and cool games?
PS: love my GB

Quoted from CaptainNeo:

because there will be a time the boards will not be available. You have to be able to fix things.
It's nice to be able to keep your games running (like system 11's) for parts that cost .01 cents (diodes). Or .85 cents (transistors).
At this point, nobody is going to make these boards in the future, because nobody has schematics, and practically every game has unique boards that only work with that game. Who the hell wants to put the time and money into trying to reverse engineer a node board for aerosmith, just to possible sell 10 of them because they don't work for anything else.
so yeah.....your game will be disposable.
the only reason you have people making repro boards now for older games, is because most boards work for like 12 different games, so they work for 100,000 games that are out in the wild. Nobody is producing boards this complex for 1 game that might have a production run of 200.

Quoted from CaptainNeo:

I think the reason is, Stern secretly wants their games to be disposable. What better way to have people keep buying games, if they are unable to be fixed in 10-15 years. With this new breed of collector Stern gets to sell to. They can do shit like this and get away with it. If they tried this 15 years ago.... OPS would have had a shit fit and would have crippled the sales.