As much as I love Bruno, it's certainly not beyond question.
Regardless of how rich the owners are, financial restrictions are largely revenue based. So it's possible that to build up steadily over the next 3-5 years, we might need to do a 'bit of a Brighton' (i.e find a gem and then sell them for more money, so we can find 2 more in their place and so on). Would really, really love to keep Bruno, Botman, Isak, etc., but it is always possible they could be sold to add funds for building the squad strength.
The next 2 transfer windows should be very telling as to whether we can genuinely improve without having to sell some of our better players.