Nightwolf7919, I don't think you understand how capitalism works. Let me simplify things: the aim is to maximise profit. To do that, companies aim to make sure their supply of a product equals but doesn't exceed demand. By not having enough supply, hasbro lose potential profit. No sensible company would do this if they could avoid it. They can't just magic up factories or increase production speed, that takes time and a lot of money.
Frankly, if a product sells so well that a company as big as hasbro can't meet demand, they'd be mad to not consider it a major line. The fact that they spend money designing their own products only further supports this. It's rather uncommon on licensed lines where no design work needs to be done. You can note they started making their own stuff when beyblade took off (the time it takes to design and produce them was the reason it took a while after beyblade got big).
Your linking the website to that is less "obvious" and more "tenuous". Again, things take time, and hasbro's website is not the main avenue for selling beyblades.
Sometimes I wish I could live in your magical wonderland where companies can magically make everything perfect, but I have a thing I do called thinking about things before jumping to conclusions (you should try it some time).
Also, I'd consider an lr string launcher more likely than a left spin only one. It's a universal string launcher, and that is very marketable, unlike a launcher that only works with 2-3 beys.