I think about this a fair amount. Either games these days are completely different or I am; now that I've played streamlined modern games I don't have the time or patience to deal with games that are incredibly fiddly or have rough edges all over the place.

I have been trying Kerbal Space Program recently for the first time. I put it off many times because I opened it up and looked at the controls settings and saw ~100 key bindings to remember (depending on the build/launch/orbital situation) and bounced right off. Now that I'm in the career mode I see that the bindings that you actually have to know get introduced slowly, but if the game came out today I think it would benefit from more polish and hiding the complexity before you're required to think about it.