Don't forget the popularity in emulating obsolete computer systems and classic arcade games on modern hardware.. that old code ain't dead yet!
There's also the fashion for rewriting some of the old classics such as Asteroids or Robotron, giving a new spin on the gameplay with power-ups, bosses etc. and upgrading the eye candy, a la "super stardust".
I'd agree with you that Encom probably would - if it were in the business of games after the crash of the early 80's and the decline of the arcade from its "golden age" - be concentrating on state-of-the-art games programmed by large teams. Maybe they'd also be peddling their own highly advanced games hardware to go with the software, competing in the wild with M$, N1nt3nd0 and 50ny.
Just imagine.. millions of Encom games systems all interconnected via fiber from the home, connecting to the game hosting servers back at Encom.. one MASSIVE worldwide Encom home gaming system. Pong on an infinite scale!
Even though Encom would possibly be aiming at such large-scale markets, I'm sure it wouldn't stop certain free agents within those programming teams from having a little fun in their downtime
This is, of course, just all conjecture from within my head.. but it's fun thinking about it