Sorry for being unclear. What I was trying to communicate is:
1) Over the years, I've seen a lot of HN comments expressing the belief that "all barriers to entry are bad; regulation always creates barriers to entry, therefore specific regulation under discussion is bad";
2) The reasoning behind "regulation always creates barriers to entry" is that larger companies have it easier to adjust to regulatory changes, by virtue of having more financial buffer, a lot of lawyers on retainer, and perhaps even some influence on the shape of the law changes in question;
3) I agree with 2), but I disagree this is always, or even usually, a problem. I also disagree with "all barriers to entry are bad", and therefore I disagree with 1) in general. The reasoning behind my dismissal is that it's trivial to think of examples of laws and explicit barriers to entry that are net beneficial for the market, for the customers, and for the society.
4) Once you realize 1) is obviously false as an absolute statement ("all barriers to entry are bad"), you should realize that mentioning barriers to entry as implied negative is a rhetorical trick. Onus is on the person bringing it up to show that specific barrier to entry under discussion is a net negative, as there is no reason to actually assume it.