You're in some kind of dungeon or palace or vault, and it's full of treasure. There's treasure everywhere. You're walking on gold coins. None of it can be picked up, however, except for the one chest that you can open and there's some random piece of combat-related equipment in it. Never mind that there are jewels lying around like pebbles on a pebble beach: you only get to open that one chest.
The reason they can't pick it up, of course, is because of the necessities of game balance. Giving players untold wealth can have repercussions on an economy. In some games, players can pick it up but they're labelled as thieves and will be attacked forever more by all guards throughout the known universe. In other games, it's so heavy they can't pick up much of it to carry away in one load and it's just too time-consuming to loot. Most of the time, though, it's not treasure at all, it's just treasure-coloured carpet.
The weird thing is, players have seen this so often that they accept and expect it. They would be astonished if they could actually pick up and profit from that casually-available currency.
Normally, the default in fiction is that if there's no indication that something doesn't work like it does in the real world then it works like it does in the real world. Now, however, we have so much fiction in our lives that the fiction itself can at times become the default.
So long as we can recognise that it is nevertheless fiction, it's not a problem. If we think that what is created as fiction is how things really are, and default to that rather than to the reality, well that is a problem.
Is that screenshot from Final Fantasy XIV like social media and the treasure coffer like your feed?