The point is, these weren't bad games by execution, but because of idea. Adventure games were never really meant to be big budget, because games rely on volume

The point is, these weren't bad games by execution, but because of idea. Adventure games were never really meant to be big budget, because games rely on volume to bring profit - and competition kills it. And gameplay possible in pure adventure games is very limited. Even pure puzzle games fare better. Yet here was an attempt to make them expensive while not bringing compelling gameplay with it.