Well Elon is already talking about human trials for it so probably within this next decade, ngl sounds kinda fucked tho i would not want to be hooked up to a computer.
RE: When do you think Neuralink etc will appear for public?
I think development has a long way to go for it to be used in an actual everyday setting. It's still limited in terms of depth and it barely passed the hardware development stage. I think realistically it could take minimum of a year or more to develop specfic use cases for the implant, especially considering it matters a lot where you actually place it on the skull.