Well some of those countries have strong ccTLDs and do not necessarily use .COM as their local TLD. The UK has opened up registrations at the .UK level whereas previously regstrations were only possible at the lower subdomain levels (.CO.UK, .ME.UK, .ORG.UK etc). The .US ccTLD has suffered from being in the same market as .COM and has only about 1.8M registrations. The .CN ccTLD is problematic for non-Chinese people and companies. Russia has a very strong ccTLD and also has IDN versions. India is also an interesting market (relatively strong ccTLD) but there is still a lot of emphasis on .COM and the other gTLDs. If you are going to start domaining in ccTLDs, you have to really understand the market the ccTLD serves because many of the .COM dynamics and rules don't apply.