Does technology really change everything?

I have seen how FMCG retail chains work and I have also worked in production. Now I am in retail informatics. Technology companies are the engine of development all over the world. Last year WalMart spend USD 1.5 billion on improving their supply chain because the market is changing. How one can compete in such an environment? By using the latest technology! Those who want to prepare for the changes need to invest in development and technology companies are ready to provide retailers with solutions. The question is: When will retailers act?