According to the president of the Semiconductor Industry Association (SIA), John Neuffer, the roadmap "provides key findings about the future of semiconductor technology and serves as a useful bridge to the next wave of semiconductor research initiatives". As miniaturisation hits its limits the chip making industry is expected to turn further to 3D structures in transistors and circuits. It is noted that the memory industry has already gone big in 3D and monolithic 3D integration holds still lots of promise, as recent news of BeSang Inc's 3D Super-NAND shows.Already process miniaturisation has started to become so difficult only a few highly successful companies have managed to hang on. IEE Spectrum says this difficulty has resulted in the 19 companies developing and manufacturing leading-edge transistors in 2001 diminishing to just four in 2016; Intel, TSMC, Samsung, and GlobalFoundries. This fiercely competitive quartet of companies doesn't want to work together with the ITRS - each has their own roadmaps now ? that's why the latest ITRS roadmap will be the last.