I disagree.
Big time star players (and that would include Robinson and Duncan) are what make this league. Nobody goes to watch the players you claim would take the 50/50 split.
The players already offered a 50%-53% band, and the league rejected them.
The owners don't want a capitalistic (sic) system. Otherwise they would have to pay through the nose in salaries. Guys like Kobe or Lebron are worth much more than $25-$30 million for their respective teams. If they already overspend when there's an actual penalty for doing so (lux tax), then on a true capitalist system, without barriers, penalties or regulations, they would throw the kitchen sink at the stars. Which takes us back to the first point: This is a star driven league. There's no way around it.
I disagree that players have no leverage or no better options than just wait it out.
On the wait it out front, they realize some owners and knee deep in debt and can't afford to just sit a season, while the big market owners are losing money and want to roll. It only takes so many owners votes to get a deal in place.
On the not waiting it out front, they can decertify, then sue the NBA on anti-trust grounds. There's a long precedent on that, with the NFL lockout being the closest example of how that route can bring the owners to quickly sit down and negotiate in good faith.
Not really. The deal being offered would be worse than the previous CBA. Which in turn was worse than the CBA before it. Players know they'll have to give something up, and they have. The league is both locking out the players and attempting to implement a brand new system basically unilaterally.