You can drop $600 on a router with more antennas than a military base, configure QoS until your eyes bleed, and still watch your Zoom call buffer during standup. Or you can grab a $7 cable and suddenly you're hitting headshots like an Olympic sharpshooter with zero lag. The ethernet cable doesn't care about your neighbor's microwave, your walls, or which WiFi channel is "least congested." It just works. Every. Single. Time. Meanwhile your fancy router is over there trying to beam packets through three walls and your fish tank like it's playing networking on hard mode.