If you buy the US version of Adobe software then using it in another region is not allowed in their EULA. So it's almost the same as torrenting it except you paid for it. After a quick look I found these in their EULA:
"Adobe grants Customer a non-exclusive and limited license to install and use the Software (a) in the territory or region where Customer obtains the Software from Adobe or Adobe’s authorized reseller or as otherwise stated in the Documentation (“Territory”)"
"4.9 Territory. Customer shall only use the Software and access the Adobe Online Services in the Territory and in a manner consistent with the activation policy described at http://www.adobe.com/go/activation. Adobe may terminate the license granted herein or suspend the Membership or access to the Adobe Online Services if Adobe determines that Customer is using the Software or Adobe Online Services outside the Territory."
So... technically, that means that if I (an American) go on a business trip to Australia, open my laptop and use my paid-for copy of Photoshop, Adobe could terminate my license?
"Adobe grants Customer a non-exclusive and limited license to install and use the Software (a) in the territory or region where Customer obtains the Software from Adobe or Adobe’s authorized reseller or as otherwise stated in the Documentation (“Territory”)"
"4.9 Territory. Customer shall only use the Software and access the Adobe Online Services in the Territory and in a manner consistent with the activation policy described at http://www.adobe.com/go/activation. Adobe may terminate the license granted herein or suspend the Membership or access to the Adobe Online Services if Adobe determines that Customer is using the Software or Adobe Online Services outside the Territory."