There's so much middle-class context assumed in this piece I don't know where to begin. What if, for starters, you have a family and the responsibilities that come with it? "I'm only going to focus on my passion from now on" will probably lead to homelessness in pretty quick time unless you have a nest-egg to burn through while you reach profitability. What if you're in your 50s and stuck in a low paid job with a wif…
If you have a higher level of focus, you'll take a step back when someone says or does something harmful, and be able to communicate effectively in a mature and kind way. This can improve your relationship. The benefits are not just work.
If you have concentration, you can setup a 1 hour block a day first thing in the morning, and work on a goal every day, instead of futzing around. You can go to bed on time easier too, because mental habits are more malleable with focus and awareness.
I can keep going on. The benefits seep into your every day life, regardless if you're on the street or a billionaire.
This is why mindfulness meditation has become so popular, and in late why lsd was so popular, because both increase focus and concentration, as well as increase awareness into what is important so you can better achieve your goals even if it is only working towards it 5 minutes a day. It's no secret you need a minimum amount of focus to succeed in life. Sure, it's only an ingredient, not the whole dish, but it, like oil, is an important base ingredient.