Like Jalen Thompson...?
Multi year starter and a cornerstone of the team and we paid him top money. He's the 12th highest paid safety in the league.
Cortland Sutton
WR1 on the Broncos and a Pro Bowl wide receiver
Tim Patrick
This one you can have
Kenny Moore
Best slot corner in the league.
Dennis Gardeck
Gardeck wasn't extended until after year 4. His deal the year before was an ERFA tender.
Dre Greenlaw
Greenlaw is an All pro / Pro Bowl calibre linebacker.
The only guy here who's in the Kirk/Murphy/Allen mould is Tim Patrick and he signed an $11.33m a year deal which is hardly a "Home discount".
I'd list all the non elite players who haven't been extended early but it's easier to just say it's everyone except Tim Patrick.
And it's almost certainly a player/agent thing. All players think they an invincible. All think they can play better and thus make more money later. And every single agent is telling them every GM that or they aren't very good at their job.
And every GM that picks up a phone to an agent and says "Let's get this deal done early" hears back "Sure, if you pay him now what he's going to be worth after next year".
Which is exactly what we did with Jalen Thompson.