This simply cannot be possible. Perhaps you've been fortunate enough not to encounter the sort of people the article is referring to, and consequently aren't familiar with the drain these people are.

Some examples from my own life, a more modern context:

- acquaintances ask me to "fix their Internet" because I'm "good with computers": I point out I have other priorities and they're already paying the line provider/ISP so should call them for assistance

- similarly, people who ask me to fix their computers: I point out that they wouldn't expect a mechanic to fix their car for free, and besides IT != software development

- back in university when people asked me to help develop or debug portions of their solutions: if I couldn't figure it out in 15 minutes I told them I had other priorities but gave them general advice about what the problem or solution might be

- people asking me to work longer for the same amount of pay and unpredictable benefits (i.e. bonus formulas): I became a contractor instead and I've been immeasurably happier for it

You simply cannot consent to every request from such people - they will literally drain your life (i.e. time) from you, to what end?