> Robocalls I assume are profitable to someone. Therefore they will always find a way around blockage.
False. Robocalls can be made unprofitable. Take a deposit from the sender before calling you, and if at your discretion you determined the call was spam, don't refund the deposit.
Robocalls aren't solved because phone software didn't add this feature.
I have noticed most calls I get, the phone rings I answer, there is silence for a few seconds (maybe just one) where the robocaller detects someone answering the call, then they route it to a human. The human then gives their speal. I will do one of two things:
1) Say "hello, oh yeah I would like that" and then put the phone down near the TV.
2) Just hang up.
If I think it is a SCAM I will usually say something like, "you should be ashamed of yourself".
All in all, option #1 tends to work the best. I am now only getting "Extend your car warranty" call every 6 months.