There are many many good reasons for developing the technology. It's so bleeding edge though only some people will try it. Billionaires who don't need to ask anyone else are some of the most likely people to be doing this.
But there have already been incredible strides made with some of the projects that have had human trials.
Where I think we all need to really put them under the spotlight is what do they do for the people who got these when the companies shit the bed? Whomever gets this tech needs to be taken care of. This isn't something they should be allowed to walk away from if they don't like the direction the research takes or if they just decide they no longer want to develop it. And think that line of responsibility is exactly at human trials .
If they start, they shouldn't be allowed to stop.
Some readings for those interested in it
https://en.wikipedia.org/wiki/Neil_Harbisson?wprov=sfla1
https://futurism.com/health-medicine/paralyzed-first-person-shooter-brain-implant
Permanent storage. Like the Wayback massive and internet archive I hope will fully take advantage of these. As well as project Gutenberg. So much else. I've been waiting for something like this for a long time