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To be honest, I really can't see a way. Pokémon got successful organically - the games launched and their popularity spread by word-of-mouth, as the software sales rose, so did the Game Boy sales, prodding Nintendo to order another game off them, the anime launched in april after the first anniversary of the games' launch and sparked an explosion of people seeking merch of everything, leading to the establishment of Pokémon Centre (the precursor to The Pokémon Company) and Nintendo working out the feasibility of bringing the series westwards.
Nowadays, people are launching with the games, toys, tv series, collector's figures and the rest of the crap, gambling on scraping enough of the pie off Pokémon to stay alive or just flat-out avoiding its demographics, at the expense of missing out on the normie masses because while some people want a "mature" pokémon, the majority don't give a fuck for it and there's where the growth is.
There's too much money involved in all this currently, for anyone to want to try the organic route - and that's even assuming they have an idea that's as simple, yet as engrossing and as captivating as Pokémon.