Electric cooktops are more expensive compared to the gas-equivalent ones, that counts, especially for middle- and low-income countries (even though I agree, in countries like Norway that might not seem like that much of a problem).

Also, in terms of resilience gas cooking beats electric cooking. In my experience (I live in an Eastern European capital city) gas delivery has been more constant compared to electric power, not to mention that even if both gas and electricity were to be cut off it's much easier to connect an existing gas cooktop to a small gas tank than it would be to connect an electric cooktop to an equivalent battery. In fact my parents still use gas tanks for part of their cooking (for the other part they use actual wood).

Norway used to be relatively poor. If anything too poor to consider building a gas supply network too. In that sense I guess Norway leapfrogged the issue. At the point building a gas supply might have been viable it just wasn't on anyone's radar.

As for reliance on electric supply, I haven't experienced any outage longer than a couple of minutes since the 1980s, but I get that will certainly depend on where you live.

Resilience of gas is important to consider as it eliminates the single point of failure, if your power goes out you still have a means of heat.

Many places the reliability of power is good enough that we're prepared to handle that by going to a hotel. It's been decades since I experienced more than a couple of minutes without power.

Meanwhile I've had gas boilers fail twice and had to resort to electric heaters while waiting for repairs.

I live in Canada.

Snow and ice storms are a reality that make self sufficiency highly desirable.

I grew up in Norway. Snow and storms were insufficient to give most people a reason to worry. Some homes will have a fireplace or wood fired stove as a last resort, but it's more and more rare. In rural areas having a fallback is slightly more common.

So I stand by what I said: Many places the power reliability is high enough. A long outage in Norway would be treated as a major national emergency.

Portable cassette gas stove is pretty common here in Japan. This is the best for emergency. https://www.amazon.co.jp/-/en/Iwatani-Cassette-feu-Master-Po...