Looking at the statistics, .co has a fairly large market share. Premium names make things a little harder, yes. But I do get a few solid premium names when the occasional discount comes up.
Moreover, renew fees for premium .co names stay at the base price, so I don't struggle with astronomical renew fees like many ngTLDs do.
This will be off-topic, but please stop replying to trolls. Aren't you tired of writing the same things to the same users over and over again in every topic?
As if they are not enough to steal your precious time and energy, they will continue to do the same indiscretion as you continue to feed them. Be cool, just ignore and move on.