You are ignoring history to prove your point.
- 10 Year plan means nothing. It just means SONY plans to support the console along side any other ones currently on the market. It will NOT cockblock a PS4. Sony has 6 year plan for actual successors.
- Super Slim means nothing - Sony released the PSone remodel right as the PS2 came out. Showing remodels wont cockblock a successor.
The reasons you have listed for a delayed PS4 have never stopped SONY in the past.