TOS-R in syndication has gotten the same ratings as ENT in syndication. The ENT first run episodes still had higher ratings. Either way CBS only gets the money that stations pay for the right to broadcast the syndicated episodes. No station will pay as much for a syndicated show as for a new show. A new show will clearly have more gross revenue, when it comes to net revenue thats a different question and depends on the cost of redoing TNG vs. producing a new show. Plus you have to factor in continuing the brand. Would ST 11 or TOS-R even be happening if TNG had never happened and there has been no ST since TUC?