I'd say you have a bit of an idealistic/warped view of the world, and the inhabitants within it. Not everyone has the luxury of being so generous, or non-ambitious enough to not be competitive. You're arguing against a natural set of rules, and the effects that emerge from them.

If someone invents something that eliminates a task/work/something, then they won't pass on all those costs to the general public. Not unless it suits them to undercut competitors. And that's just one example. On the other hand, you also have business owners that regularly pass on savings to their customers, even when not necessary.

If they can manage to do that, good for them. But let's not impose our unrealistic ideals on free-thinking individuals "just because it's good".