I once read a lovely article online (which I've never been able to find again, I think it was by a founder of tripod?), recounting the early days of search engi

I once read a lovely article online (which I've never been able to find again, I think it was by a founder of tripod?), recounting the early days of search engines. He was thinking of starting one, but the market was already filled... then came another search engine, and now there really was no room for another one... this iterated over several engines til he finally got to google. And added: now it's really filled... Of course, today google still rules, yet they act incredibly threatened by facebook; and niche engines like duckduckgo are making inroads. Is this true for smartphones? All we can really say is that he (and I) can't think of a way to enter... but that doesn't mean there is no way. Just as I wouldn’t suggest anyone build a new line of PCs or cars Like electric cars...