Why would they stop ? They don’t care about negative publicity (which they have aptly proven in the past as well), and proclaim slimy lies on the practice (“protecting our customers” my ass – I am not your customer, and never will be, you can bet your shiny robotic ass on that).
Until the ICANN changes its rules (and remember, the ICANN moves slower than molasses in January) and makes those frauding bastards pay for this abuse of their registry status, they’ll keep doing it, lying to your face when you ask them about it, and generally being pricks and **** (as well as *******, ******, *********, ***********, and **************), and make a whole lot of sweet moolah off of the whole thing (claiming they are not monetizing on this scam, when clearly they are getting registrations through that at twice the market price).
If you can wait 5 days, wait 5 days, otherwise you just got scammed.
As for other registrars doing it … There were some big brouhahas about this kind of stuff in the past (usually related to “independent” WHOIS lookup services and some shady registrars dealing with them), and rumours that some big bad criminal activity was going on (whois server operators selling their search logs in real time, though that was never proven). Netsol just does it on a much bigger scale.