Open source is leading to single source
Open source is a totalitarian dream. It means you can't have competitive advantages unless, like Google, you don't distribute your applications, but keep them internal, and just force people to use them remotely.
This way, you keep all the power, and share very little of what really matters. You just get the breadcrumbs of the real development efforts.
That's why, instead of a healthy competition from different product, you'll see one OS only (Linux), with only Windows still able somehow to compete, how longer, we don't know, one social, one code repository, one search engine, and so on.
Open source leads to more concentration, not to more diversity. Why should you invest on something new instead of reusing someone else's work?
Where's the innovation? Linux is built on an outdated model. Most software, in the past ten years, became worse, less usable, buggier, and the tools to build it too. You can't any longer make money in development tools, so why invest in them? Just get some crappy open source IDE, and hammer it into supporting some way your development.
More and more developers just reuse some bad library, or copy shitty code. Because writing their own code is too expensive and time consuming. The larger part of open source fanatics are people who want stuff for free, and have nothing to share.
We would really need innovation, but no one will invest the needed resources because it's just too expensive, you'll never recover your investment because people will use whatever is free - they like to be paid, but not to pay - and it will be also frowned upon.
And what is worse, it that open source Talebans are perfectly OK with this. They dreamed for years about ONE OS to rule them all. They are utterly afraid by true competition, they dream about a world where power is utterly concentrated, hopefully in their hands, while pretending to shared.
It won't end well - we'll enter an age of stagnation. Until someone will start to think "sharing" is not always the best option, while progress if often stimulated by competition, and that needs some degree of selfishness.