It'd be nice if you didn't spread false information like that.
The Japanese are very conservative in their manga. They have not accepted Digital Mangas on tablets or electronic devices nor have their shonen mangas evolved in any meaningful ways. Look at their current Jump lineup, most of them are knockoffs/following of earlier mangas like DBZ and YYH. There are some new ones but they are rare and tend not to last long. The power of friendship is evident in nearly every single manga. One of the reasons One Piece is even popular is because its the next DBZ for most people.
Not to bash Oda's skill as his manga is great but I bet you a lot of money that DBZ fans missed DBZ and found comfort in reading One Piece which followed just 2 years after DBZ.
The amount of manga titles available in the US is very small no thanks to free manga online and no support from most individuals. Companies such as Shueisha and Kondasha (The Big 3 and Fairy Tail respectively) don't give their mangas chances here because people barely buy them. We don't get new series like Medaka Box and Kurogane over here. Which is why Shonen Jump Alpha was made and it barely has any manga. Only 5 series as of now and only 4 worth reading imo.
As for Bleach in Japan, that is not true about what you said. The entire details are not known but for a show to be canceled it needs to end before it reaches anywhere near the end of the current manga chapters. For example Saint Seiya was ended before reaching the Hades chapters but was eventually brought back in OVA format. Same with Inuyasha which ended at episode 167 and then continued on in the Final Act. (After skipping a lot actually lol) Bleach ended right at the end of the Fullbringer Arc, which is right before the beginning of the Final Arc. If it needed to be canceled then Bleach would have ended right after the Aizen Arc or in the middle of the Fullbringer Arc.
As for Tite Kubo being urged to end his manga. Do you realize how stupid that statement sounds? Bleach was in the top 10 in last years chart of mangas sold in Japan. Shueisha wants One Piece, Naruto and Bleach to continue on for longer, especially One Piece which made nearly 40 million units sold last year. Thats one of the reasons Naruto is even ongoing IMO as it should have been wrapping up by now but nearly 7 million sold is very tempting to Shueisha's pockets.
While Bleach has been fluctuating in the manga rankings, it has gotten Rank 1 recently.
It would be stupid of any anime studio to pass up on animating Bleach's last arc and raking in the money from the sales. So no Bleach's anime wasn't canceled completely. How would a anime getting canceled mean there can't be OVAs or reboots? What do you think happened to HunterXHunter?
BTW expect the One Piece Anime to be put on hold eventually. Filler can only stave off for so long especially since One Piece volumes come out every 3 months in February, May, August and November then repeat the months with different days.
There are 4 episodes in a month, aka 4 chapters per month for OP episodes. By 3 months 12 episode would have gone by meaning 12 OP chapters which equals 1 volume and 2 chapters.
The OP anime is on Volume 64 chapter 633/634. Volume 66 just came out this month. So by the time its August when volume 67 comes out, the anime will be done with the fighting in the Fisherman Arc and will be on volume 66. Meaning there has to be filler to cover for distance or goodbye One Piece anime. Since the anime will get to volume 68 at the same time as manga.
Well if you are confused, pissed or laughing from reading this then I did my job.