The future of experimentation

For a long time, I have been wondering about the future of radio experimentation. 

Fewer amateur radio people carry out experimentation preferring instead to buy ready-made transceivers to communicate. 

In the future I am sure a small number of people will want to carry on with radio experiments although, more and more, I am convinced this will be outside traditional amateur radio. 

I suspect many will go the ISM direction or possibly other forms of communication such as light beams or sub-8.3kHz. In the past I have experimented at 481THz (red light) and very low frequencies through the ground.  Neither require licences. No licences are required to use ISM, although a self-declaration of conformity may be needed, certainly in the UK.