It is possible. Nobody really does it because it is kind of impractical and it costs 200-300 dollars. HDMI cable costs like 10 dollars for 3 meters or so...
I would say it's possible. My TV used to randomly pick up next door neighbour's TV signal of whatever they were watching, including video and computer games.
This would work if your using like office or surfing the web. Read the comments for more ideas. Roku 3 streaming box was one idea. If your trying to stream video content then you have a bunch of things you can use with a wifi router; chromcast; amazon fire stick.
If your trying to game. but it needs certian TV's.
wireless hdmi = a kit of a transmitter and reciever. but it seems most of it depends on what your wanting it used for is good or not. OP didn't state what he wants to do; surf the web; stream video; play games; personal media like pictures; use office; to me the most demanding would be for real time gaming.
1) video streaming has tons of options if your using a wifi router.
2) hdmi wirless can be done but it is appears to have connection issues for gaming
3) Some of the more modern tv's make it a tad easier with built in technology.
The OP really needs to do his own homework as the specifics of what he wants to accomplish and what gear he's trying to do it with will have to be tailored to his needs.
he would have to state what he wants to do and exactly all the details of his home network devices and internet equipment and his tv specs and his PC specs....