Why most mechanical keyboards don't have a wirless version?

Thanks. I have been using wireless keyboards since they first came out many years. Recently, I just use the keyboard on laptops. Is the comfort of mechanical keyboards worth it? I am considering the das 4 professional and others.
 
i use external kb on my laptops because im a heavy fingerer. easy and cheap to replace external, not so much a laptop kb.

i dont really get comfort with keyboards, they just do their job. well, unless youre going to get a $200 pressure switch kb.