The millions of ET carts were indeed buried in a landfill and covered in tons of concrete. The console crash wiped out the market as people turned to computer disk/tape games for a 1/3 of the cost due to many over priced substandard arcade conversions. Probably the same reason Amiga sales dropped off and consoles came back in fashion in the 90s

NES is for dumb idiots mind, Zelda and Mario are just average too so in EU NES was a dead end. PC-Engine I could understand people wanting OTOH.....