Alot has been written past year about how and why SONY can't compete with the Korean TV Box makers. Sony with its excessive army of 'salaryman retirees' and higher Japanese wages, can't make TVs as cheaply as the newer Korean and Chinese cos. can.
But in Computers its not just 'legacy costs' of SONY's big former workforce. Its not just higher costs of Japanese labor and managers. Its the MICROSOFT SOFTWARE SONY PCs run on.
Long ago, Apple was small in size vs. all the IBM PC Clone Computer Cos., which MICROSOFT SOLD / SUPPLIED THE SOFTWARE FOR. Apple Computers much smaller production runs and smaller quantity of parts purchases back in the 1990s and 1980s, meant Apple computers cost alot more than IBM PC Clones, such as SONY and Toshiba and NEC, and Leading Edge and Packard Bell and Compaq and Dell and others made.
But APPLE kept going, and over a long time, became big enough its production runs got bigger and its costs down, so it could make a computer of any given quality for only a bit more cost than the IBM/Microsoft Clone Computer Cos. Further, Apple moved all its PRODUCTION TO near-slave wages CHINA (so cheaper production than many other computer cos.).
Now with Economies of Scale, and Large Financial Warchest, and no army of "salarymen retirees" to eat up its future profits (since Apple's workers in China are all subcontracted out to Foxconn),... Apple has much higher profit margins on its computers sold than any of the Clone Computer Cos.
PLUS UNLIKE SONY and TOSHIBA and HP...etc, APPLE NEED NOT PAY BULK OF THE PROFIT FROM EACH COMPUTER SALE TO MICROSOFT. SONY HAS A MICROSOFT PARASITE EXTRACTING PART OF EACH SALE, THE PROFIT FROM EACH SALE, is main problem now.
Wrong, Apple never had anywhere near 100% of the market. In the beginning there was Altair Kit Computers that gave Apple the idea. There was also Commodore Computers and Radio Shack Trs-80 personal computers, both had more market share than Apple. There was also Epson portable computers in 1983. None of these ran on Apple or Microsoft software. There were numerous other brands before Microsoft and IBM Compatible PCs. APPLE never had even a majority of the market in PCs, let alone 100%. Apple always made a better computer, it cost more. Now it doesn't cost much more.