The article talks more about being able to legally play old games without downloading roms or anything, but that's a different topic from video game preservation. Video game preservation itself is doing just fine though. The vast majority of games are archived online and emulators provide super easy ways to play games that are impossible to find now.
Sure, companies should allow people to play older titles in easier ways, but to say "efforts to preserve gaming's rich history are failing" is just wrong.
Leave it to Gamesindustry.biz to conflate "preserved" with "in commercial circulation".
The entire article bends over backwards to present "people having drm-free digital copies of the game" as not being an option, to the point where, as Redkey mentions elsewhere in this thread, GoG doesn't even come up when one game sold on there is framed as being "lost".
Even the guy who wants old games freely playable will only go as far as saying they should be playable "online".