I'd suggest that if Laine was willing to sign Rantanen's deal ($9.25M x 6 years), the Jets would probably have him signed already (they were willing to give him a very high $6.75M on a bridge deal). I'd add that Connor signed for $7.1M x 7 years last off-season (just above Laine's bridge deal).
I've indicated that I don't have any issue with Laine getting paid the most on the Jets, and I would expect that the Jets and other players on the Jets would probably be okay with that. But the fact that they haven't been able to agree on a deal, and that Chevy gave Laine such a rich bridge deal, suggests that the Jets are willing to pay Laine a lot, but that so far it hasn't been enough for Laine.
As I noted in an earlier post, Buff's agent (Hankinson) provided some very interesting insights into internal dynamics around salary structure. It's not just about who makes more, but also how it affects the ability of the team to build a strong roster in a cap system.
My point isn't to focus so much on the amount Laine is worth (though I've shared my views about that previously), but more to refocus attention on the issue of contract / salary as a central part of the issue with Laine.
You forgot the situation during contract negotiations after Laine's worst season. And the season was bad in two ways: Laine was seriously sandbagged during first half and then for multiple reasons of his own played a bad second half in terms of scoring.
That's like the worst possible moment to sign a contract for both sides, and yet they had to do that. I don't think Chevy was offering Laine more than 8M. Cap space was also very tight because they signed aging Wheeler, Buff situation was open and Little was not yet on LTIR.
Had Chevy signed Laine with 9.25M x 6 he would have been eaten alive by fans that at time were claiming KC is better than Laine. Heck, I guess Chevy tried to lowball Laine with KC contract.
I am quite sure Laine was never offered 9.25M x 6 by Chevy. Also as they publicly stated before negotiations, Laine's usage was part of the contract negotiations and that's the very reason for Laine side to take 2 year contract.
Never ever any reputable person claimed that Laine requires Matthews/Marner money. That has been 100% pure speculation based on literally nothing Laine and his agents have ever said or done. But the usage issue had been brought up at least 3 separate times by Laine and his agents, mostly during and after 18-19.
For example when Laine was briefly on the Rocket race on 18-19, possibly even leading it at some point during his November, his agent told in the interview that it's not going to last as you can't win Rocket from 2nd/3rd line, which is true. (And he did not mean 1b line as some teams with sane coach deploy like Pittsburgh.) Laine started his November campaign being just promoted from the 4th line into Lowry's 3rd line and was able to score his hatrick in Finland just because of PP1 time he still got and an empty netter. AFAIK pretty soon he was promoted back into the 2nd line with KC and Little. A combination that did not really click too well, but still getting some low 2nd line minutes that did open some opportunities for Laine to help his team.