One point of contention that still exists despite many of the changes in the recording industry is proper monitoring. We now have access to recording interfaces such as the Universal Audio Apollo, which yields high-end studio results. In theory, you can have a pro studio for a fraction of what it used to cost to acquire.
Even with these advancements, audio engineers continue grappling with a complex aspect of the mixing process: monitoring. It's common to have top-notch equipment and struggle with a mix. This begs the question: How can this be?