Not necessarily, but the world is evolving which means that maintaining the same product will not be profitable forever (or in this case, never). Companies wil

Not necessarily, but the world is evolving which means that maintaining the same product will not be profitable forever (or in this case, never). Companies will want to continue exist and generate more profits for their owners, which means deploying new products - and these products might appear to be different but upon closer inspection they kind of make sense. Facebook is connecting everything (core product + whatsapp + the internet balloons etc.). Googles core business appears to be analyzing large, dynamic and complex datasets (the web, maps, their biotech research, self-driving cars). Of course there are always outliers (Android), but companies go for profit. If they can incorporate something new they will.