I didn’t notice i am a year late to reply but better late then never.

To try and answer in an organized way, i may repeat some things that are already clear but just in case:

There is no way to register an IDN.IDN in the gTLD space today (e.g россия.ком or ישראל.קום), and when they will be available for registrations, then whatever is registered by that day under IDN.COM (e.g россия.com or ישראל.com) will be reserved to the current registrants.
Once the registrant wishes they can pay to activate that variant/transilerated way of saying .com in whichever language (e.g россия.ком).
That activation option is only available to the current registrant and is blocked to anyone else.

The only IDN.IDN that can be registered today are in the ccTLD space (e.g .рф)

In the IDN ccTLD’s group, some are brand new TLD’s (e.g .рф and .مصر) so since they are new there are no previous rights as they don’t exist in they’re ASCII ‘equivilants’, The IDN ccTLD’s that are existing (e.g .co.il) are also granted the same right as with IDN gTLD’s and once the approval process for the new idn variant of an existing ccTLD is completed, the registrant will activate them and they will be blocked to anyone else, but in that case i believe in most cases the activation will not cost anything and in some cases the activation is done automatically (e.g the .cn registry, if you check whois: http://cwhois.cnnic.cn/validatecode/validate.jsp?value=%CF%C2%D4%D8.cn&entity=domain&service=/whois&inputfield=value for http://cwhois.cnnic.cn/validatecode/validate.jsp?value=%CF%C2%D4%D8.cn&entity=domain&service=/whois&inputfield=value 下载 here: you will see it’s showing all variants of that domain.

If you think of it, that is the only way it can work, as the first goal is to avoid any type of confusion.

If a user won’t be able to tell (i.e when listening to a Radio commercial or in conversation),if they should visit дкц.com or дкц.ком then that is going to cause confusion as one may be a site for children and the other may be a site for (where ever one’s adult imagination wishes to go).

I hope it makes sense, please let me know if i should include any official documentation to support any of the above.

If I register IDN.IDN and the same IDN.com isn’t taken, then can no one else register IDN.com until I do?

Can you please clarify the question?

On the other hand, something like .insurance or .loans is very specific and can be assimilated into the internet’s greater system of organization. There needs to be exclusivity too with certain tld’s such that something similar in meaning cannot be released. You do not want .info competing with .facts or .data. Or .loans competing with a .mortgage. Allowing this type of incestuous competition will undermine the companies that have already branded around pre-existing extensions.

Domain extensions are somewhat like unique brands in their own right. If ICANN allow tld’s close in meaning to compete with one another, it will diminish the significance of each tld and the companies who will be utilizing them as internet portals to their goods and services.

Domain investments are not the real estate investments of the Internet. There is a limited amount of land. On the other hand, there is no limit to the number of domain names that can be issued, especially when you keep on adding on new TLD’s. The new TLD’s are good for the domain registrars who make money on each new registration, but are bad for all domain investors who will see their value of their investments continue to erode.

So here’s another thought: what if the IDN version is registered first? Then will the .com be only available to the person who registered the IDN?