So, in answer to the OP's original question. No, there is not a problem with too much stuff being available; the problem is that you can pick it all up and keep it.

Back in the mists of ancient time, when I was playing with friends using OD&D rules (i.e. whatever rules you think are best), we had reasonable limits to the volume and mass that were considered portable. If you wanted to take more, you needed pack animals or some magical assistance.

Early video games used various "reasonable" mechanisms to limit player acquisition syndrome, but as the paying audience has expanded to less detail-oriented players, most of the limitations have disappeared.

Most games also have utterly rubbish economies, particularly if they try to implement crafting systems, and rarely consider animals for their real-world roles in transport and commerce.