Sure. But I disagree strongly that it is a significantly declining one.
Desktops no doubt are disappearing quickly in favour of laptops. But I fail to see how PC computing is going anywhere. Businesses still have 99% of their employees at a desk. People may not be writing Word documents as much anymore but they are interacting with complex web apps which are ill suited to phones/tablets.
IMHO we are moving to a mobile world. Not a purely phone/tablet world.
I'm actually really surprised Apple hasn't gone down this road as it would be a really easy way to increase OS X market share if every iPhone suddenly became a Mac when plugged into a dock.
We don't have a well-polished OS that can seamlessly transition from a single-app-at-a-time smartphone UI to a simultaneous multi-app desktop UI depending on the size of the screens attached. Windows 10 comes close in terms of the transitions and polish, but only scales down to a tablet interface, rather than smartphone. The Ubuntu attempts at this just severely lack polish when trying to use it as a phone.
On the hardware side, ARM is too limiting in terms of software availability, and x86 just doesn't have anything that fits in a smartphone power envelop and can also handle a much heavier workload when used as a typical workstation.
We're seeing some rapid progress on both fronts though, so I'm hopeful it won't be too long before someone finds the right formula.
...but it is declining. Thats what all the data and consumer reports show. Seasonally adjusted, taking windows 10 into account. The industry is slowing down.
Obviously we're not going to go 'mobile only' overnight, but here are the brutal facts:
- You make more money when you have a greater potential audience of buyers.
- Investors are not stupid. Investment capital will go where the users are going.
For developers and certain technical jobs some kind of desktop machine will probably always be a thing, but there are a lot of people out there finding they dont need a laptop. Even in business.
Windows is no longer 'the' platform.
Wanting something to be true doesnt make it true.
People would often mis-understand post PC to mean "death of the PC" but really, it just meant "death of the interesting PC market where new money could be made."