"software shops are almost the same in every location" 
do you mind expanding on this a bit? Also, what size and type of shops do you refer to?

Many of our customers are small startups and small or medium sized outsourcing companies that do a lot of coding. I find that I can travel to end up in exactly the same environment. For example, a VC once asked me to go to Sweden for some due-diligence. I cleared away the pizza boxes and coke, left my basement in Cambridge, took the airplane to Sweden, took a car ride to a nice 500 year old townhouse, went into the basement, and discovered myself surrounded by programmers eating pizza and drinking coke. In Vietnam they don't have pizza. Actually, Vietnamese food is much fresher and healthier than American food. But, the people have the same approach and want to discuss the same issues. I can find someone to argue the pro-con of scrum in any of these venues, or iIOS/android. I see actually more variety in big companies. For example, the SAP headquarters in Walldorf, Germany does not have air conditioning, which is a lot different from their office in Palo Alto. Even when it is 100F / 40C, they believe in conserving energy.