Sablebrush as an expert in this field describes the process of technological development well as an iterative process. The vast bulk of such development is conducted by private enterprise, in the case of this thread, computer games companies and the film industry. These companies cannot afford to sit on their hard work for up to 30 years. They may have a 30 year plan of where they want to get to, but the technology isn't yet in place. If they don't show us what they can do then someone else will beat them to the punch.
It's not my field, but I do take an interest in the progress of film history and in particular the evolution of VFX. Cinema is filled with stories of ingenious individuals and groups pushing the limits for each subsequent film. See the history of ILM or James Cameron Abyss/T2 as examples. T2 is over 30 years old. Are people suggesting that James Cameron had the technology shown in the OP when he made T2, but he chose to keep it a secret in a bid to control minds through mobile phones? I know the T1000 can meld into different shapes. Should I be melding a tinfoil hat?