You do not need a lot of gear, vsts, hardware, you do not need a super studio, you can make great sounding music with this, everything else is just a luxury, to start making professional electronic music you only need this gear:

1- Computer

2- A Proper DAW (Ableton Live, Fruit Loops, Logic, Pro Tools, Cubase, Reaper, Reason etc.)

3- Monitor Headphones ( I recommend Audio Technica ATH-M 50)

4- Audio Interface with 2 preamps at least ( quality is important on this product)

5- Monitor Speakers

6- A bit of acoustic treatment.

7- A cheap midi keyboard. (this is not a must, you can draw every sound with a mouse)

you do not need to spend a lot of money on gear nor vsts, with only this gear is enough to make a major hit.

This is the only gear you need, everything else is not necessary (but it is fun)