Huh? I don't think they are behind technology. There are lots of technology only Japan can provide.
Japan still uses floppy disks and fax machines. They prefer to pay in cash and will go to the bank to get crisp, fresh notes - to give old notes would be disrespectful. Banking in Japan - indeed, experience with any kind of bureaucracy at all there - makes the US DMV, or indeed any Western bureaucracy, look like the vanguard of efficiency.
Can you name one, decent, enjoyable to use online Japanese store, or service? Maybe Line works ok? I can't think of anything else.
Ever tried to buy a Shinkansen ticket online ?