SFI is a Global Business Opportunity. You do not want to place restrictions upon yourself by building solely on your own environment and language.
Powerful programs exist to convert one language to another. If you have a PSA that is a real go-getter from India, for example, you can reassign others of your team from that county to that active PSA.
I also advertise in my area but I will not restrict myself to that alone. Neither should you.