That was in a time when consumers were not the only audience for his products... Remember, the NeXT platform was exclusively targeted at businesses and academic customers. Since everything from NeXT was prohibitively expensive, it was out of the question that a home user would even think about buying one of those black boxes.
I remember that I wanted to buy a NeXTstation back in the 1990s, but somehow I didn't have the 20,000 DM (around 11,000 Euros today) that it would have cost back in the day. Heck, even today I wouldn't have that kind of money for a computer. One NeXTstation did cost as much as five good PCs with OS/2 or Windows on them -- that's an extremely hard sell even in a business environment. No wonder that NeXT never was remotely successful.
Beautiful hardware, awesome software - but totally unaffordable. And if Steve Jobs were honest to himself, THAT was exactly what also almost killed Apple. Steve's products have always been overpriced, and it was not the Mac or all those "innovations" around Mac OS (X) that saved Apple, it was this little status symbol for young hipsters called iPod and the iTunes supply chain behind it that saved the company. And for some almost obscene reasons, the poor economy helps selling those status symbol: Despite their horrible financial situation, people feel obliged to buy this electronic status symbol. Just like they have to buy perfume or designer clothes.
Apple's innovations are mostly design-oriented. Other platforms also have Unix-compatible kernels, and other platforms have much better business/corporate features than Apple's platform has. And other platforms run mission critical applications at a fraction of the cost. So Apple's success certainly has nothing to do with technological innovation. Their (graphics) design and their marketing machinery are superior to the competition and they produce high-end consumer gadgets that serve as bling jewelry - that's where their success comes from.