big manufacturer's keep stock of parts to support their customers for several years after they EOL a product ... EOL is different from end of support life ... they can also offer alternatives, such as big discount on purchase of their newer platform ... in my opinion, it's actually time to get one right now before the stocks run out because PQ of plasma is way much better than LED/LCD - OLED may be better, but price at the moment is still very limiting
Aside from brand new parts stocked by the manufacturer for out-of-warranty service, common din yung pagrecycle ng valuable and reusable parts from returned/replaced units for in-warranty service kapag hindi na worthwhile i-refurbish yung returned unit. I'm not sure how efficient parts recycling is locally, pero sa developed countries big part yan ng waste reduction policy ng most makers (since they get slapped a big amount for dumping particular types of waste). Kaya minsan madali sa kanila mag-waive ng cost ng repair parts pag nagreklamo out of warranty kasi madami na ang naipon nila na recycled parts, dumadagdag lang sa storage issues. Yung labor naman usually ang costly sa kanila pagdating sa most CE item repairs.
Cradle-to-cradle ang focus nila, or closed loop material flow. Nakakatuwa yung mga innovations nila kasi even yung used packaging materials, consumables, defective components, etc. umiikot.