[projectramo]

Here are a few observations, in no particular order:

1. No one here can really tell you. They would be guessing. I would go on to indeed.com and type in the skill set you consider to be "web dev" and make note of the number of jobs and (where available) salary offering. This is the current state of the market.

2. You are asking an even more complicated question about the future state. The answer is even more prone to speculation. Your guess is as good as anyone's.

3. Although web-dev in its current form will almost certainly not be in demand, the future form will evolve out of the current form so the time you spend learning, debugging, networking will likely not be wasted. (unless we crack General AI).