Quoted from Jason_Jehosaphat:
I've had this same thought. Clearly, this hobby can only "work" for me with a LOT of support from other people - from LTG, for example. I do have one game now and it seems likely I will have it for the foreseeable future. Will I be able to keep it running? Will I be able to rely on parts sources like PPL or Marco? Replacement parts are largely made in China, and China seems to be slowly heading toward a resumption of its manufacturing economy - assuming they still have customers to export to! Still, I can't import them myself, so I expect to rely on PPL and Marco, as well as on local techs. Will my machine eventually become a non-functioning piece of furniture?
We have managed to keep 80+ year old flipperless machines working perfectly. Your nearly new Stern will be fine for a very, very long time. No need to worry.