The survival of the fittest.

I am constantly surprised at the vast number of speaker manufacturers. But many fall by the wayside. Plenty of reasons why they fail, but more interested in why certain makers continue to succeed.

Sound
Marketing
Fit and Finish
Price
Product availability
New technology
Manufacture association
Profit margin
Luck

I realize most of these in combination contribute but if you had to rank them my money is on the marketing and fit/finish, in that order with sound holding up the rear. Thoughts?