Any player would be very honored to receive an offer from Real Madrid. Money is not the main factor for players to go to Real Madrid, but because it is easy to lift trophies makes it very difficult for players to refuse offers from Madrid.
As one of the big and most successful clubs in Europe, it is very easy for Real Madrid to get targeted players, not all players can be successful when they join Real Madrid because the competition in the main squad is very tight. One example experienced by Hazard, before moving to Real Madrid Hazard was an important player in the Chelsea squad, now he is only a bench warmer due to not being able to show his best performance like when he was still at Chelsea.
At Madrid, players are full and Bellingham might find some playing but there is no guarantee. Regarding Hazard, he is not performing so yeah Bellingham will also get the same tratment if he doesn't performs. I don't think it's only Madrid, there are many clubs who also bench players when they don't perform. Take Nunez at Liverpool for example or Ronaldo at United. The question is where he will find good amount of playing minutes. With Bellingham, I think he has better amount of chances at Liverpool rather than at Madrid.
Bellingham is only 19 years old. If Real Madrid want him, this young age is a big criterion. It could be a big name like Toni Kroos. He can be indispensable in the midfield. If he has to wait a few years for this, I think he should be patient. I believe he will work wonders together with Vini Jr. Dortmund presents another football player to world football.