There is a bit of a trap for smart people with high agency where they assume "well, someone else will just go do <thing>". They assume this b/c they probably have multiple examples in their own life of being the only person to do <thing> when no one else was.

That being said, if I've learned anything during 20 years in various industries ranging from publishing to hedge funds:

1. People have very different brains

e.g. quants can't do sales and vice versa.

2. People don't have infinite time and money

Even billionaires have items on their "want to do" list that don't get done b/c it's either too complex, would require too many people, too much time etc

3. Some people are great at systems building and other are terrible

This could really be downstream of item 1 but it's worth pointing out that building a system of people and processes is it's own specific skill. If you live in an organization where specialization is rewarded, you'll find that there are fewer and fewer people who have this skill.

4. People underestimate what it takes to do <thing>

The classic case is the HN "Oh you want to start a software consulting company b/c you like programming? That's like saying you want to start a pizza parlor b/c you like making pizza. Making the pizza is only 10% of the job."