More speakers for sale than other componenet. Y?

There are more speakers for sale on AudiogoN than other component, except for cables (1512 - 1606). And even that is very close.

I understand why there are so many cables for sale (High profit margin), but it just struck me as odd, because speakers are often thought of as the cornerstone of a system. Aren't most systems built around a good set of speakers?

Maybe that's why there are so many companies trying for that niche?

In my case, I have had the same pair of speakers for about 10 years (Alon I), and I have completely replaced the electronics and cables. Some more than once.

What is your opinion/experience?

Brad