Won't: They are perfectly fine with their schedule and the money they make outside WWE

As things currently sit, the Elite have the freedom to pick and choose the dates/shows at which they wrestle.
They primarily are linked to NJPW and ROH, but both also compete at several independent shows like Major League Wrestling, Northeast Wrestling and Pro Wrestling Guerilla and others.
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If signed to WWE, they'd have to wrestle for only WWE, unless it was for a network outreach appearance like the Street Profits and Fabian Aichner recently did for Evolve or Killian Dain and Progress Wrestling.
Apollo Crews also wrestled for Preston City Wrestling while still under employ of WWE.
All of those extra pay checks form different appearances would go away if the Bucks and Omega go to WWE.
The schedules they keep are also a lot more lax than the rigors of a year-round campaign in WWE.
Wrestlers are often away from their families for more than 300 days a year and that can take a toll on everyone.
It was one of the main bullet points in the AJ Styles/Samoa Joe feud.
The funny thing was that there was truth to the statement as AJ is asking for a more limited schedule in negotiating a new contract so that he can spend more time with his family.
Nick and Matt Jackson are both family men so they won't like being away from their families for that long - unless the money is too good to pass up.
NJPW and ROH have allowed the Elite to compete in several events outside of their respective umbrellas, including Chris Jericho's first-ever Rock N Wrestling Cruise.
They might already be away from their families for numerous weeks at a time and maybe that wouldn't bother them as much.
If it's nothing close to 300 days on the road, they might not sign with WWE.
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