Shouldn't Apple be somewhere in this table, then?
http://en.wikipedia.org/wiki/Market_share_of_personal_comput...
I think you're hugely overestimating Apple's market share in laptops.
Firm (4Q13 US Market Share) HP (26.5%) Dell (22.8%) Apple (13.7%)
Case in point: I don't even own any Apple products.
But anyway, the problem you described is the fault of your vendor, not "Linux".
I went to the website, downloaded a .deb file, double-clicked the downloaded file, clicked the big install button in the Ubuntu Software Center window that it spawned, entered my password, waiting a few seconds aaaaand it's installed. I can now run the application by clicking the big Ubuntu button on my sidebar (or pressing the Windows/symbol key) and typing in the first few letters of its name. I can optionally drag the icon to my sidebar for quicker access.
Here's how I installed the last couple of applications that didn't have a .deb file (mostly development builds of games and developer-targeted applications):
I went to the website, downloaded the .tar.gz/.tar.bz2/.zip file for my platform, double-clicked the downloaded archive to extract it to a new folder in my home folder, opened the folder and located and double-clicked the executable.
Thousands of other software do the same. Examples (compare the installation instructions for Windows v/s Linux/UNIX for all these pages below):
MOPEX [http://irsa.ipac.caltech.edu/data/SPITZER/docs/dataanalysist...]
Multibit [http://multibit.org/en/help/v0.5/help_installing.html ]
Octoshape [https://support.octoshape.com/entries/21488922-Octoshape-App...]
UNetbootin [http://unetbootin.sourceforge.net/]
Tuxboot [http://tuxboot.org/installation/]
You listed a few major ones which work the desired way, while there's a sea of applications which make Linux still look archaic.
The 90s called, they want their complaints about Linux back.
* Globally, Android pretty much owns the mobile market. Android is a Linux.
* Most servers run some flavour of Linux or BSD.
* Although Windows still dominates the desktop market, a healthy share of the laptop market belongs to OS X, which is (partially) based on BSD.
This isn't exactly how the Open Source crowd envisioned "Linux on the desktop", but if the goal was to marginalize Windows in flavour of open source based *nixen, much of that goal has been accomplished.
Of course neither Android nor OS X are Free (as in freedom) and OS X is only partially a BSD, but you can't have everything.