What's blocking Wikipedia to just archive the referenced pages on edit? It would be far more reliable than depending on Internet Archive when it may not have t

What's blocking Wikipedia to just archive the referenced pages on edit? It would be far more reliable than depending on Internet Archive when it may not have the page archived and more likely the time of the archive would differ from the time it was referenced. It would cost some more disk space and bandwidth, which of course is already pressuring them but in turn would greatly improve usability and reliability.