Objective metrics of performance are easy to come with: speed, memory usage, latency, throughput, energy efficiency, depending on type of your software. I can launch Windows Task Manager and those metrics are right there. Those metrics can be measured and compared. Quality isn't hard either, just count bugs. Many customers don't want to pay for performance or quality, they want features, delivery speed, shiny UI and listen to marketing too much. Slack is a joke when it comes to memory consumption. But it has smiles and marketing campaigns, so everyone's using it anyway even if chatting was a solved problem 30 years ago in kilobytes of memory.