Starting a business is always up and down. What's important is that in the end, you've done more things right than wrong.
It's easier to teach a programmer business administration than the other way around.
In Silicon Valley, almost all founders, in particular CEOs of Big Tech Companies are software engineers, but in Germany they are unfortunately business managers.
Everything that can be digital will become digital.
Any business process that repeats itself will be replaced by AI and ML.
Software engineers are the artists of the 21st century.