Sadly mate that requires a forward thinking and planning ownership, CEO and most importantly DoF, i don't think we have at least 2 of those 3 and certainly all 3 have shown varying degrees of incompetency in their roles.
There's many ways to bridge the gap in reality, the most quoted one is 'the spurs model' - but will give a caveat for that as well, yup they bought some good young players - Eriksen, Son, Alli and some shrewd 'peak year' players like Lloris, Vertonghen, Alderweirld, Dembele etc but also made a lot of mistakes as well in players like Lamela, Sissoko, Jansen and a lot of others. But why i think the spurs model isn't one that can just be copied for a similar result, they struck gold, they had a once in a generation talent coming through in Kane who they had zero ability to attract a player of that calibre through the way they recruit, if you like it'd be like if Rooney would have come through during Martinez first season at the level he was at when he was 21 or so, we'd have ended up finishing easily inside the top 4 and the entire landscape of the club changes.
Sio guess what i am saying is the spurs model can't be copied, because the thing that has pushed them on from where we spent a large portion of the last 15 years - the best of the rest position, was Kanes development which can't be replicated really, they kind of got lucky in that regard.
You also have the model that teams like Sevilla use etc, which is by and large picking up overlooked talent, or 'flawed' talent - bit easier to do for them as they in large part take spanish speaking players who have failed in moves to other countries and rehabilitate them - lack of English players moving abroad removes that possibility for us ofc.