Morality and downloading

[One Above All]

The laws of almost every country forbid copying software without permission, and so it is legally stealing.

Indeed it is. Legally, piracy is thievery.

Another issue would be this-- is it immoral to disobey a law that doesn't represent the interests of the majority?

The law isn't the issue; the software developers are. I guarantee it: if software were affordable to the majority of pirates, then the majority of pirates wouldn't pirate that software.
Speaking of me, personally, as soon as I got the money to buy Watchmen (the novel) and Before Watchmen, I did. I could've downloaded them - it crossed my mind - but I didn't. Because the books were fairly priced (IMO), because I could afford them, and because I wanted them, I went out and bought every one of them. However, if they cost around €40-€50 per book (€200-€250 total), I'd have downloaded them in a heartbeat.

Also, is it moral to establish a culture which absolutely revolves around music, movies, games and television, and then exclude from these cultural experiences those who can't pay for them?

I can't answer that, because I care about social trends (music, movies, games, TV, fashion, et cetera) about as much as I care about the average number of water molecules in a drop of rain. Less, in fact, because the calculations and reason for the latter might actually be interesting.