ItalianDragon,
Double extensions have been around awhile look at the .co.uk i own and run 2 succesful business's a shipping company and an ISP in the uk and hardly any company wants the .com unless they do business outside the uk. They are all extremely happy with the .co.uk
India has had the .co.in for quite sometime.. they have a similar thought pattern. Then a new extension comes along and people say hey heres a new indian extension called .in its shorter. Yet indians already know what their extension is because all the major companys and lesser have registered thiers under the .co.in and spent a lot of money promoting etc not just on the web but on the side of thier trucks, letterheads etc etc you get the picture.
Its also like the airport control saying sorry you can not fly to India in one flight now we have to take you via 3 other countries and you will have to board 3 planes to get their. It will take time but people will get used to the idea of the 3 stops instead of 1 like the .in over the .co.in but in time it will be accepted by india as much as its brother the .co.in yet TIME is the key and i do not see this really happening for at least another 2 or 3 years.
the LLL and NNN though different story in .in and the gimmick registrations like come.in stop.in etc these will sell to collectors all the time.
checkout my .co.in and .in you can see where i can i have registered both..
www.domainsearch.co.in just incase companies or inviduals have asked for both.