I'm not sure what you're trying to say, could you phrase your comments a little more...coherently?
I guess I'll continue to say that the 80s was more or less the "Golden Age" of video games, so it makes sense that they'd make movies based off the most popular games to try to rake in some money. The quality of the video game-based movies in the 80s were lacking because:
1) special effect technology wasn't nearly as advanced as it is now
2) most of the budgets for these films probably weren't that spectacular
3) as I said before, video game plots (especially in the 80s) are often poorly written/thought out, which in turn leads to poorly written adaptations.
Today's video game movies haven't been faring well mostly for reasons 2 and 3. Though I guess you could argue you need a big budget to have impressive special effects. I argue why waste all that money on a movie, when you could invest it into an even better game?