The S in IoT stands for Security. One serious note: It is possible to build secure APIs the technology exists and doesn't cost a fortune. There are well documented standards for encryption, authentication, authorisation and digital signatures. When you think you're ready pay good people to audit your work and do regular penetration testing. If you can't build a secure system they should put your name on a list so you don't cause anymore damage.

Microsoft goves their own Developer Advocates Apple gear. What do they expect if they're not dogfooding their own Operating system. Imagine going to a Chevrolet dealer and all the salesmen are driving Audis?

In 1981 with computer studies in high school we started with mainframe assembler and COBOL, I was on the verge of quitting when we started Fortran. I realized the power of computing and the rest is history.

People feel like you devalue their emotional investment in struggling to learn how to use the dysfunctional software.

Maybe upgrading bandwidth is not always the solution, reducing bandwidth usage goes a long way. So you should either change the cafeteria menu or raise prices

Rugged or Dust proof or waterproof or shock proof all cost money. There are various standards that apply like MIL-STD 810F or IP54/65. Maybe you just need a good enclosure and shock proof drive and the rest can be standard. Check the temperature ranges on specs and you will be surprised.