Day One on Tech Has no Boundary

Computer Technologies has been intentionally divided into couple of  territories, Microsoft, Java, iOS, Unix/Linux and etc. Which is the best is an endless argument for decades. And what ends up to us, like most of the IT folks, is to learn various of platforms, terminologies and languages in order keep up our works/jobs. Lots of time was wasting on duplicating works that had been done by other people in a different platform/languages. How many people feel comfortable with that? Some may do as this is how the money comes from, right.?