yeah we knew arcades have similarities with casual games BUT... if you seen the technologies of videogame cnsoles then and today we all know why videogames at that time kept simple and sometimes repititive and addictive at the same time.
I doubt no one can do a epic singleplayer campaign of Medal of Honor and Call of Duty during the NES or even the SNES times. Arcades and core singleplayer experience are same addictive but at the same time different
end of core gaming days prediction:
E3 2006-The beginning of the end. Wii introduced
E3 2008- Armageddon. Wii motion plus introduced. Wii Music. Reggie says Animal crossing was a core game. Massive disappointment. many Wii core gamers selling their Wii.
E3 2010- Tape runs out
http://www.fivedoves.com/letters/march2009/ICG_Tape_runs_out.jpg