Obama already canceled the replacement program
That answer is a definite yes!
Should free enterprise be doing a manned space program that answer is a definite yes!
Should a USG space program,that's more qualified yes!
USG should be doing the high risk basic science stuff both manned and manned.
Having both a private and a USG program would be beneficial to all in the long run.
For all its waste the public gets more bang for it's buck from NASA then it does from most USG non-DOD activities.
And NO I don't work for NASA or any contractors affiliated with it!