Siannah: It does? Always? Pretty much depends on what you consider under "ruining"...
The latest X-Com? Fallout 3 / New Vegas? Tomb Raider? Hitman: Absolution? All changed a lot of the gameplay, all going for a wider audience, all succeeded (some more, some less) commercially where the series was pretty much dead before.
Ruined or revitalized?
Just because some marketing guy claim "the game will be more accessible", doesn't automatically mean "it's going to be shit". Neither does going for a wider audience, which IS the case for ANY game / company. Nobody's aiming for a smaller potential target.
Well, your examples pretty much proved my point. New X-COM, removed inventory, gutted base management, removed action-points, removed number of weapons, squad customization, you name it and it was removed or streamlined. Fallout 3/NV, lol well they did turn a complex skill-based turn-based RPG into a console-orientated first-person shooter, not much to mention there.... Tomb Raider? Well the early tomb raiders have (reasonably) large levels with almost no scripted events, tough puzzles and traps. New Tomb raider is barely even a game, more like a corny interactive movie strung together with lame QTE's. Oh and regen'ing health instead of items, no swimming (underwater puzzles), no platforming elements.
And yes, more accessibility = shit, it's pretty much a universal law. Making games for bigger audiences means more mediocrity because the vast majority of your average blokes aren't that bright.
Nobody's aiming for a smaller potential target.
Plenty are. When you aim for specific
Your strange claims I've heard before though. Why would I care if the "names" of these old franchises still exist if the games are nothing like the originals and are utter trash? Your like a Kotaku shitposter shouting how "At least Bethesda kept Fallout alive", yeah by turning it into something it never was.
Retard.