It is unlikely that in the coming years, we should expect major victories from Newcastle, even if they have a wealthy owner. The team will essentially start from the beginning. It will be necessary to attract a new coach, after the new players. And the team will need time to reach stable results. In the future, strong players may come to the team who will fight for awards. But this will require a lot of time. Maybe 5-6 years.
You are right just money is not enough you need to do some other things as well because like you need good combination good coach and many factors works for this all. We have few examples already like Manchester City and PSG they are doing good but never won Champions League because there are many other teams with the best quality teams, and they all are doing their best so here you need to do some good strategy which bring you better results.
Now Newcastle is in good hands, but they need nearly 2 or 3 years for better results in Premier League, recently they are fighting hard for coming out of relegation zone.