DVDs and reruns are for the nostalgia-freaks then, while the main series is for the new gen kids. Furthermore, Star Wars is a totally different franchise altogether. Star Wars is a global sensation, while the Pokemon anime is clearly a Japanese-centric show with all its cultural references and Prof. Oak Senryu.
Seriously, you've gotta think of this in a marketing way. As much as I understand the criticisms towards the writers' merits as writers, it's kinda pointless to whine about a business franchise effectively making loads of money. People complain about Transformers movies all day long, and Michael Bay is still making movies.
I AM familiar with marketing stuff, actually. I have an uncle and an aunt who teach advertising and is an advertising agent, respectively, and I've also gone through economics and public speaking courses as well, not to mention have actually experienced production of a commercial first hand by my aunt inviting my mom and I to actually watch a commercial being filmed.
And BTW, I brought up Star Wars because you did. And if they were simply money driven, they'd go further to alienate the older fans to cater solely to the new crop than they already have by, you know, not doing ANY reruns or DVD releases at all, basically Orwellian-based retgonning any prior series.
An overarching goal that has little bearing or significant impact on the show? I'd say that's a marketable material for the kids. Run a gimmick, kids enjoy it, repeat the process, profit.
And besides, it's better that Satoshi doesn't become a Pokemon Master. God knows the kind of influence the show would have on children if Japan decides to take that "Gotta Catch'em All" mentality seriously. Next thing you know, children will be running around trying to be "Pokemon Masters". This is almost as disturbing as the fanatical idea that Pokemon exists in real life.
When it pretty much forms the backbones of the entire plot of each series, yes, it definitely is significant. Heck, Dragon Ball had the tournaments actually be significant (heck, the ending of Dragon Ball even had Goku actually winning a tournament. I'm talking original Dragon Ball here, not Z or GT.).
And as far as your comment about Pokémon Master, actually, the show makes clear that becoming a Pokémon Master doesn't mean catching every Pokémon known to man. Heck, if anything, Gary had 200 Pokémon by the Indigo League (and that's likely not even counting Legendaries), yet he didn't even achieve the rank of Pokémon Master at all (he did worse than Ash in the Indigo League, even with going for ten badges, not to mention got beaten by him in Johto and actually gave up the training profession in favor of following his grandpa's footsteps afterwards). It all has to do with actual, utter, pure strength and skill, which can only be demonstrated at the leagues. Heck, that was even spelled out in DP as well, to say nothing about how Mewtwo was actually considered the World's Greatest Pokémon Master in the first movie (and considering how he had been utterly unbeatable in combat in Movie 1, he definitely proved his claim very well if you ask me).
Hah! My fat Aunt Annie ass like hell it is! Obligated? You must be new to adapted materials. Welcome to the adult world of "we adapt it and make tons of money off you".
I'm not new to it, actually. I've seen a few Disney adaptations of Fairy Tales, and Dragon Ball itself was adapted from Journey to the West. That's not even getting into some DC Animated adaptations of certain comic books that I've at the very least read up on, and have watched the Harry Potter film adaptations as well as read the actual books, watched the Lord of the Rings Trilogy, and have watched the first three Narnia movies, and read the first book in full.
And considering the anime is explicitly considered an advertising agent of the games, especially now with the likes of AG, DP, and even BW and XY (and BTW, Takeshi Shudo made clear he didn't intend for the anime to be an advertising wheel for the games, but just an adaptation of the games), yes, trying to include as much of the games as possible is indeed very much necessary and an actual obligation. Otherwise they'd be sued for false advertising.