Because some offers have the ability to make the league a ton more money, and more exposure, not just cash for the outgoing owner.
It’s the reason why Bettman has been apparently counselling RR on his moves.
The money has to be on par across the competing bids to make the outgoing owner happy, the rest is on what the incoming owner has to offer.
Do not underestimate how a higher valuation for the team benefits the other owners.
Forbes valuations are just estimates. Actual, real life examples of money paid for a franchise moves valuations more than anything.
Say the Sens sell for 100M more then expected with multiple bidders and no specific conditions indicating that the price is an outlier.
With Ottawa being a midling value team, that would indicate a 3.2 Billion dollar increase in the perceived value of the league.
I promise you the owners of the league and Bettman would be very happy with that.
The ability of one owner over another to generate revenue is much more subjective. All likely bid winners will have somewhat deep pockets and will do a new Lebreton Arena deal. If not they would be stupid to outbid the others. RR may be a factor in this however, all but one group is reported to be open to his involvement.
Its hard to imagine a realistic scenario where a considerably higher sales price would not be accepted by all parties.
Note: If you think the 100M above estimated sale price is unlikely and doubt what the actual sale price does to Forbes valuations consider this.
The Forbes valuations for Ottawa in 2019 was 445M, it has increased to 800M as of this last December. Considering there was almost no difference (other then the COVID drop) in Hockey revenue over this period, how much of it is due to the Senators rumoured selling price of 800M - a 355M increase?