@YGSITH
Two reasons why they don't make the change:
1) Inertia. The manga industry has been essentially unchanged for a hundred years now. Thisb is the way that works and you dont fuck with what works in an ultra-conservative culture like Japan. Risk leads stoo often to failure and everyonw in a position to make change is already getting their ricebowl filled, ao there's nothing in it for them.
2) Expense. Switching to a new format means investing a lot of dosh into infrastructure and education. Costs that publishers don't want to absorb until they absolutely have to. Look at how long it took print media to get aboard the internet train in the US. Some of those places are still trying to make the machinery they use to print hardcopy manga pay for itself, if they switch, they have to eat the lost amortization costs.
3) Power. Mangaka and manga authors get paid shit and work themselves to death. Why? Because the publishing houses hold all the power for comercializatuon of manga. We're starting to see aome change in this arena, but by and large, if you want to make money in the creative aspect of the manga industry in Japan, you have to sell your work to the publishers, who get to pay whatever they want since there's no other options for you. Switching to a digital format means giving up a lot of that power, since any asshole with 6 months of training and access to a desktop publisher can start an online manga publishing company. The same way switching to a digital format has rung the death knell for the big recording labels, it would spell the end for the slow, cumbersome publishing houses. Tiny publishers that earn the artists more money will eat away at the larger publishers like piranhas after a goat.
Change is the watchword for the digital age, and if there's one thing Japan hates, its change.