Its a gamble..
Times have changed, between the tv, xbox, massived amounts of bandwidth, and cheap hardware, keeps people indoors. I do get the concept of "people getting together", but everything accomplished at a "cafe" could be done at home. (with out the extra fees)
It all depends on your area, where i live (northern CA) PC ownership is very low. The local library has "Free" 10 free machines just FOR Net browsing. As for larger cities, Ownership is alot higher.
I wish you the best of luck, but if its gaming related, youre gonna need high end machines, ofcourse throw in the switches, cabling etc etc ( commerical pipes, (or tubes what ever) will add up quick.