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>The Japanese audience generally liked BW (the main arc at least), with the exception of Team Rocket's retooling into more serious villains
>The western audience has the opposite view
>The Western audience generally views XYZ as an improvement over Best Wishes, the Japanese audience holds the opposite view, with XYZ generally having worse ratings than BW's main arc
>Pokemon Origins was liked by Western fans, but in Japan, its ratings were nothing special, and a regular anime special starring Brock and Cilan did better
As far as the anime goes, whatever the Western audience likes, the Japanese audience hates or is indifferent to, and vice-versa.
That's probably why they'll never make a full series like Origins in Generations; it wouldn't be popular enough in Japan to warrant it, judging by the lukewarm reception Origins got, and the current anime is still doing its job of selling merchandise.