They're expensive, yeah. I'd like to a build a machine sometime, but it's not really enough of a priority. Frankly, I want to build a Technika machine more, but a touch display good enough for it is going to cost loads.
What about the servers, too? I don't know if there's any PC version of Technika available, so that may get in the way.
Only servers I know of are for Pop n' Music and Beatmania, and that's Programmed Sun, which was taken down quite a while ago/is closed. It just has a image that says "THANK YOU FOR PLAYING".
EDIT: Also, the song in this OP was recreated in like 3 different emulators.
REFLECT MUSE has one:
https://www.youtube.com/watch?v=0A996rpDWPAAlong with BMS/Lunatic Rave 2:
https://www.youtube.com/watch?v=aPjlaryTagEAnd a modded Infinite version for K-Shoot Mania, which is even harder than the offical EXHAUST chart:
https://www.youtube.com/watch?v=8xikEQ5bgXQEDIT2: I ALSO forgot that it has a Stepmania version which is extremely difficult on PAD:
https://www.youtube.com/watch?v=sDWYxUUpKVQAnd has a boss in something called "I Wanna Be The Burst (Insanity boss)":
https://www.youtube.com/watch?v=T4cfsqHJGPUSo, simple and short: This song is so awesome it's in almost everything.