I'm not disputing that. It's also largely inconsequential.
Rajon Rondo is a better basketball player than Damian Lillard.
Damian Lillard is a better trade asset, and holds more trade value, than Rajon Rondo.
If you've spent 4 million dollars of your 80 million dollars on your starting point guard, you have 76 million dollars to fill out your roster with other starting caliber,all-star, and reserve players.
If you've spent 20 million dollars of your 80 million dollars on your starting point guard, you only have 60 million dollars to fill out your roster with other starting caliber,all-star, and reserve players.
Not every team is going to pay 20 million dollars for Rajon Rondo.
Every team will pay 4 million dollars for Damian Lillard.
I have no idea why you've changed the discussion to be about Damian Lillard. Let me remind you that we were initially talking about Rajon Rondo at the end of next season vs. the #5 pick in the upcoming draft.
Let's say (and this isn't a completely unrealistic scenario) that Rajon Rondo fully recovers from his knee surgery, returns to the court, plays some of the best basketball of his career, with a further improved jump shot, and helps lead the "rebuilding" Celtics to the playoffs. You may not think this is likely, but you must admit that it's within the realm of possibility.
Let's also say that the #5 pick in next year's draft turns out not to look like a surefire future perennial all-star and core building block in his rookie season (also not a completely unrealistic scenario).
If those things happen, then, despite his higher price tag, Rondo will be a much more valuable asset than the #5 pick. I'm not talking about how good each is as a player, but about value as an asset. In the case above, you could probably trade Rondo for another star player if you wanted. The same couldn't be said for that top five pick.
The statement that the #5 pick will 100% certainly be a more valuable asset than Rajon Rondo at the end of next season is
not a fact. It is, in
fact, merely speculation.