Earlier quoted context omitted.
I think some games do have a dark side, crafted by the creators to hook into the psyche of the players. I talked to a developer of a popular free-to-play game, and he told me of many of the psychological hooks they use in their game. Exploitation of hoarding behavior, community fame for specific players, random occurrences that are carefully scripted, etc. Nowadays it's hard to find games free of ulterior motives. Ye…
Videogames have always had "money mixed in", profitable videogame studios are as old as videogames themselves, and your glasses are just rose tinted. I'm not even sure what kind of "old" game you're picturing that you think didn't have "money mixed in" - tetris? pong? goldeneye?
The real exception is gambling games.
And I did think along the same lines (in a very minor way) with arcade games. Pinball - where skill let you prolong a game gave way to video games (like pacman or tetris you mentioned), which quickly got too hard to keep going. And it went further when games like gauntlet kept you feeding quarters in a pay to play way.
But at that time, we got atari and nintendo and so forth. Pay once, play for a long time. Kids grew up with this, and parents worried about the cost of a cartridge.
But the current crop of games is free, yet blatantly money oriented. Plants vs Zombies pre-EA vs post-EA comes to mind. Add grinding and then pay to not grind.
Yes, a little rose colored. But in vegas you can actually register as a compulsive gambler and the casinos will not serve you.