"As for the chromecast only being useful at a cybercafe and not at home...A USB powered monitor could be used with the chromecast at home"

Definitely it will be useful in the house house to be build.

I only meant that will it be feasible to purchase such item and give to individuals to take to their homes.

Keeping it in a common will definitely work.
And for your dreams I am only doing what I can believing and hoping that everything will work out perfectly as we desire.