You're conflating topics. I'm saying the cost of switching is trivially low for search engines. The moment Bing becomes better I can switch to it with a "single

You're conflating topics. I'm saying the cost of switching is trivially low for search engines. The moment Bing becomes better I can switch to it with a "single click". The moment I like something about Android or iOS I can't switch with a "single click". Whether or not a search engine should be barred from showing snippets is a different topic IMO.