I have severe doubts that Opera would work if no other mainstream browsers would work. It sounds like this site checks for IE and if it doesnt see technologies specific to IE (and I am guessing specifically the Windows version - meaning the old ancient version of IE for Mac wont work), it just outright denies it and there isnt going to be a fix.
Honestly it seems as if the website designer went out of their way for some reason to lock out other browsers for whatever reason and unless there is a major consumer backlash, there is likely little that you are you going to be able to do to change that.
And it really irks me, the web was never designed to lock you down to one technology that is closed source and is on one platform. MSs monopolistic ways made it really popular to utilize technological ways to insulate their ecosystem and its very tough to break those habits. And the sad thing is that there is very little that you can do to stop it. Unless the company is a monopoly in the limited and strict legal sense and their methods are deemed the be a violation of trust (thats something the feds are going to have to do), they are fully within their rights to set whatever rules they want for accessing a private portion of their site.
Honestly it seems as if the website designer went out of their way for some reason to lock out other browsers for whatever reason and unless there is a major consumer backlash, there is likely little that you are you going to be able to do to change that.
And it really irks me, the web was never designed to lock you down to one technology that is closed source and is on one platform. MSs monopolistic ways made it really popular to utilize technological ways to insulate their ecosystem and its very tough to break those habits. And the sad thing is that there is very little that you can do to stop it. Unless the company is a monopoly in the limited and strict legal sense and their methods are deemed the be a violation of trust (thats something the feds are going to have to do), they are fully within their rights to set whatever rules they want for accessing a private portion of their site.