Much of this is economics, someone has seen the opportunity to charge people for taking pictures of their building, even if it abuts a public space. Fine if you are entering and want to take photos of the interior, feel free to ask the photographer, pro or amateur to sign in for 'permission to photograph' and make a small charge if you feel but be warned irrespective of the permission you have given me, if you charge me I WILL exercise MY right as OWNER of the PHOTOGRAPHS I HAVE taken with MY camera and use them for whatever purpose I DEEM suitable for them but rest assured you will NOT benefit from the them in any shape.
Once permission has been given, irrespective of whether charged or not, you have been granted permission, and the photos you take are yours, if there are exclusions for use of the photos you take in the permissions personally I would say ****off. Sorry you can't have it both ways You have charged me a fee to take photos therefore I can take them and do what I like with them.
Now I'm no legal beagle but in my opinion permission is permission, Lets be honest how are they going to police it when you have disappeared into the interweb? Have you tried to see who is using your photos that are posted on the web, I'm sure we all add copyright but can you trace everything you have posted I can't.....
Hope this doesn't sound too aggressive but I get really miffed about it, I was stopped in London by the police for taking photos of a hotel in Paddington, simply because I had a DSLR, LF and MF Film cameras and a Tripod, well two actually when there were Chinese, and Arabs taking photos of the same bloody building and they were left to do it. Rant Over and time for a sup of me wine
![Big Grin :D :D](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png)
![Big Grin :D :D](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png)