Japanese IT companies coming to Thailand

In 1970s and 80s large manufacturing companies in Japan set up factories in Thailand to get the benefit of low labor cost. In 90s parts makers especially in auto industry came to Thailand to meet the needs for large makers. After year 2000 companies in trading industry came to Thailand and now companies in service industry such as IT, warehousing, catering and food are coming. I am in IT industry and I get more questions from large Japanese IT companies about setting up an branch office in Thailand. Set up an office is easy but counting business in Thailand and even growing is not an easy issue. Japanese IT companies usually target Japanese makers but it will be necessary to target both local Thai and non Japanese foreign companies to grow. The market is limited if they target only Japanese.