I suppose Sonic '06 was too hyped at the time for them to just give up like they did with X-Treme.
Who can't blame fans, the trailers and the screenshots in the magazines just were too awesome ... just like Sonic Forces.
I was a fool to get hyped up when all of those villains showed up.

My own fault though. "Fool me once, shame on you, but fool me twice, shame on me."
Thankfully Sonic Mania was so good it cured me from my disappointment of Forces.