[ssamuli]

Only reason I use OS X instead of Linux are the commercial apps. Not because of how Mac OS X looks. I like to pay for apps when/if they are better than their free/opensource counterparts, but very often those are not available on Linux.

Wouldn't it be great if there was a commercial multiplatform apps marketplace, similar to Steam but more productivity focused?

The marketplace could even provide developers with an SDK to enable them to easily create packaging, networking and UIs without having to use OS specific libraries. Basically anything that usually has to be done for each platform separately. Similar to how Unity3D helps with multiplatform game development.

Something like this could push developers to release commercial software on Linux, too, because it would be basically just another build from the same source.

And who knows some day Adobe and other big players might release their products like Photoshop, Lightroom etc on it.