Decades ago, when the best gaming at the time was in arcades (and all that was available as home consoles was either Pong or maybe Atari 2600), the games were generally Nintendo hard because they wanted as many quarters as possible fed into the machine. For that purpose, the game was not trying to give the win to the player to make him feel good. (Actually, games that ended aside from time limit or running out of lives were almost non-existent until about the mid-'80s.) The game was trying to beat the player mercilessly (sometimes spectacularly, sometimes not) after about a minute grace period, and it was up to the player to fight back and get the highest score, or survive as long as possible. Because of hardware limitations of the day, instructions were on the cabinet and/or played during games' attract mode. Level 1 may give a one-liner hint or two.
Before video games became widespread in arcades the '80s, pinball machines were dominant. Arcades in the late '70s were dominated by pinball machines (and some had pool tables). Even during the early '80s, there was roughly a fifty-fifty split in pinball and video games. The point of early video games was much like sports or various pinball machines. Play as long as possible to get the best score or something similar.
The closest thing people had to a console RPG was Adventure on Atari 2600. That game is classic.