Very few people want to spend $40 on a fire extinguisher every few years until the moment when their kitchen is actually on fire.*
*That is, unless, history repeats itself and we lose ~1-2% of the world population[0] this Fall. That might provide sufficient motivation.
[0]https://en.wikipedia.org/wiki/Spanish_flu
"Stored pressure ABC extinguishers are very common, and they often require internal maintenance every 6 years and hydrostatic testing every 12 years. Other types of extinguishers may vary in their internal examination and testing intervals."
-https://www.cintas.com/fire-protection-services/fire-extingu...
*That is, unless, history repeats itself and we lose ~1-2% of the world population[0] this Fall. That might provide sufficient motivation. [0]https://en.wikipedia.org/wiki/Spanish_flu