The author, probably, picked the worst example. Here is a pic:
https://iro.nl/app/uploads/2018/12/P-67-onboard-the-BOKA-Van...No, the containership is not a simple system. It's very sophisticated one. It takes massive engineering effort (literally historical effort and knowledge) to build, massive resources for the material and outsourcing, very complex (like the pic) infrastructure in case of repair, satellites to guide the ship and check the weather, operators from all around the world to track the containers, massive ports to load-unload the shipments, etc...
The operation of guiding the containership through the sea is a simple one but only once you have everything of the mentioned above in order.
If you are building software (a full SaaS solution), you are not in the business of guiding the containership. You are in the business of building either the containership alone; or the whole related infrastructure (or parts of it). That's a huge undertaking that requires massive engineering efforts. It's not a simple task.
If your task is a simple team that guide the container, you might make money for a while until everyone else figures out that you have no edge there and they can do your job for much less.
The Instagram/Tinder examples are a bad one. It ignores the fact that to find the right (addictive/highly viral) app, you'll need (again) massive psychological knowledge and expertise into how primates brains work. We don't have that, so engineers are brute-forcing by making too many apps until one hits the jackpot.
