Perhaps we have a different idea from Harry Kane about the title that many players want. I wonder if he doesn't really want the title so much that he is so loyal to stay at Tottenham for years, because if he wants he can actually find a club that can give him a title that many players want. He's a good player, we can't deny that, but it's unfortunate if he never gets a prestigious title during his career. There's something to be said for that, because it's not ambition but it's a form of wanting something.
He could go to Real Madrid for example if he pressures Tottenham to sell him. But it seems loyalty trumps all and he is comfortable at Tottenham despite not winning titles.
It's quite strange for a striker who is hungry for goals like Harry Kane but he also doesn't really care about silverware in his career. Spurs have been his home for a long time and maybe his love for Spurs makes him very comfortable to stay for a long time. Another thing that made Harry Kane not want to leave England, maybe he couldn't be far from home or family. But even if in the end he doesn't get anything during his glorious career with Spurs, I think he can play for other English teams like Manchester United who are currently also in need of a striker for next season. For Real Madrid, that seems like a pretty slim chance and maybe it will never happen.