Unfortunately for them around the time of Netflix's ascent they were embroiled with all kinds of financial issues but still the mind boggles
Sony Rootkit, Sony BetaMax, Sony MiniDisc, Sony ATRAC, Sony Memory Stick [Select / PRO / Duo / PRO Duo / PRO-HG Duo / M2 / XC / PRO-HG Duo HX / WTF], Sony UMD, Sony Elcaset, Sony SDDS, Sony VAIO, Sony Walkman, Sony Discman, [...]
At least they had some lasting success with their Umatic video tape cartridge, and with the CD that they co-developed with Philips. Their Trinitron tubes were unique and generally quite good -- and they lasted as long in the market as any other CRT did, I suppose. And their various iterations of PlayStation console have all been popular despite being Sony products.