They'll have to do something, else by turning a blind eye, the majority that don't bring one in that would like to, will be queuing up at GS to ask why some people are allowed.
Either way, the most important thing is that they will be significantly reduced in number if not gone.
Interesting to note that they are also banned in DLR, DLP and HKDL, but NOT Japan, where I believe this all started. The Japanese love taking photos!