yes, we know that. the problem is, that things have changed a lot from 2002 till now.
two reasons:
1: Euro teams started handing out contracts, that are similar or even better, than thoses NBA minimum or LLE contracts are.
yes, to make the quan, you still have to go to the NBA, but if you are a star player in Europe, you can also make enough money for your whole life, if you sign one of thoses 5-10 million dollar contracts, the premium players are offered nowadays. (if I remember right, that is close to the quan, wasn't it 11 million that Rod finally got? ok, it's some years back)
if Spurs keep offering half of the money this players can get in Europe, arguing that they own their rights, they just won't persue them to sign any more. usually a player also wants to go to a team, that really wants him. the European team do want thoses players and show it in money and in love and not just by let the bookkeeper make a call.
2: scouting of NBA scouts in Europe has developed a lot during the last 5 years (also a result of the Spurs draft success with Euros 1999-2002). the Manus and Scolas of the future won't fall to the second round any more.
Spurs FO hasn't reacted to this by intensifying scouting at home AND by taking (and paying) what they already have. Scola will be last player of this calibre, who will fall to the Spurs hands in the 2nd round.
Sanikidze and Karaulov are the new reality. (add Beno, even a 1st rounder though)
Duhon could be a Spur, Ariza could be a Spurs (if they didn't let Atlanta pick Sanikidze) and with the totally wasted Karaulov pick they could have also drafted Butler, who they two years later decided to favour over Scola.
Spurs FO have to realize, that the golden days of overlooked Euro talent are over. they had their share in Manu, Giricek, Tony and Scola. they missed the opportunity to get more out of the Giricek rights, because then they also refused to sign him. he would have signed an even worse contract than Manu did back in 2002. some months later, they could have traded him for much more than the 2nd rounder they got from Grizzlies.
and back to the beginning.
yes, Spurs are cheap. but you have to be cheap and smart.
Spurs were smart till 2002. they still live from the smart moves of that days.
unluckyly they lost the smart part and not the cheap.
to be just cheap and not smart will rather make you the Clippers of 2000.