This has a historical component I imagine in that Mac has traditionally catered to the design industry but if you look at current market dynamics, major software vendors need to support the top platforms that people are willing to spend money on software for.
This includes Apple and Windows essentially because although Linux is a great operating system everyone expects to get everything for free so software vendors that produce high end products have traditionally not bothered putting their products into the Linux market and so Linux is stuck with almost exclusively open source products which is fine but will never be cutting edge as the companies charging for their products have the money to reinvest into the next iteration. That being said, the cheapest route to where you want to go may be to buy a reasonably high spec PC, put Linux on it and use VirtualBox to install Windows and Mac in VirtualBox and you can get nearly the best of all worlds.
You'll need a bit of technical know how to pull this off and probably a bit of fiddling but it should be possible. "Mac is a well written operating system which is similar to Unix" - uh, OS X is based on the BSD flavour of Unix.
It's not just "similar" - it is Unix.
Rocktober Deals: Up to 20% off qualifying items Dedicated to turning your ideas into great music, Reason 4's sequencer is swifter, stronger, and Propellerhead invited some of the world's leading synthesists and sound developers to add. Thor Polysonic Synthesizer: Thor is a semi modular synth with interchangeable oscillators and filters. Beat Making Music Software Pro Pack - Best Music Production DAW + 5Gb of Sounds & Audio. Music Editing Software for Recording Production Mixing & Beat Making Bundle - DAW, Audio. Propellerhead Reason 10 Music Production Software: feyvxv.me: Musical Sabrent 4-Port USB Hub with Individual Power Switches and LEDs (HB- UMLS) Akai Professional MPK Mini MKII LE Black | Black, Limited Edition Key.
Thor Polysonic Synthesizer Semi-modular instrument with God-like synthesis power. Build your sounds from 50 years of collected synth history. Monotone Bass Synthesizer Tailor-made for deep basslines, this is exactly what you need to add that rumble and punch to your low end. Subtractor Polyphonic Synthesizer Warm, straightforward and easy to use. Subtractor is most Reason users go-to synthesizer. Kong Drum Designer 16 pads of complete inspiration. Use samples, synthesis, physical modeling and effects to build the drum machine of your dreams.