You're taking anti-monopolistic sentiments to an extreme.
1. The goal of almost every rational business is to achieve a monopoly in a certain space. If the public or the government had the power to systematically break up every company who comes close to success, there would be little incentive to start a business. Perfectly-competitive industries are awful for business owners. You have to draw a line in the sand, before-which monopolies as tolerable. I don't think Craigslist is anywhere near that line.
2. A huge part of anti-trust laws means that companies engage in anti-competitive practices. To the best of my knowledge, Craigslist isn't doing this. It's simply refusing to willingly participate in its own destruction.
3. I question your usage of the words "normal" and "natural". First you claim that monopolies indicate the failure of normal capitalistic competition. Then you claim that monopolies naturally occur. Then you claim that we need to act to bring back natural market competition. So which is it? Are monopolies "natural" or is competition? And why does something being "natural" make it good?
1. No, the goal of most businesses is not generally to achieve a monopoly, the goal of most businesses is market share or just profit. A company can have 100% market share and not be a monopoly, if the barriers to entry for new market participants are comparable to the original barriers to entry for the current winner (so there aren't network effects, or prohibitive capital investment relative to divided market size).
2. I never talked about anti-trust laws or anti-competitive practives. I talked about natural monopolies [1], which have nothing whatsoever to do with those. You're thinking of artificial monopolies, something totally different.
3. I said "normal capitalistic competition" in the sense of competition outside of special cases (like monopolies). And "natural monopoly" is an economics term [1]. I used neither in a normative sense.
1. The goal of almost every rational business is to achieve a monopoly in a certain space. If the public or the government had the power to systematically break up every company who comes close to success, there would be little incentive to start a business. Perfectly-competitive industries are awful for business owners. You have to draw a line in the sand, before-which monopolies as tolerable. I don't think Craigslist is anywhere near that line.
2. A huge part of anti-trust laws means that companies engage in anti-competitive practices. To the best of my knowledge, Craigslist isn't doing this. It's simply refusing to willingly participate in its own destruction.
3. I question your usage of the words "normal" and "natural". First you claim that monopolies indicate the failure of normal capitalistic competition. Then you claim that monopolies naturally occur. Then you claim that we need to act to bring back natural market competition. So which is it? Are monopolies "natural" or is competition? And why does something being "natural" make it good?