The obvious difference is that the gun industry is opposed to making it easy to track down guns. There are no powerful financial interests fighting for our data privacy.
Money's important, but you can ask the most recent stark example, Jeb Bush, just how far it gets you without votes.
And I'll add that only happened after there was a sufficient trail of dead or maimed bodies, enough atrocities committed by the BATFE starting in the early '70s (new law + sugar price supports putting their "revenuers" out of a job when moonshine became a hobby), that we got riled up enough to achieve this. As of yet, our lack of data privacy hasn't produced enough of these.
People don't become alcoholic because powerful beer industry spent money on preventing laws against alcohol.
Perhaps you're right, and we need to treat our countries addiction to guns instead of trying to reduce the supply.
There's no 'addiction' to Gun. I am an immigrant myself, and before coming to America I was anti-gun. Now, I am not scare of guns anymore and consider it to be a great social good.
Fixed it for you, as my side sees it.