We should go to 8MB today.
You can. What are you waiting for? Go build a block bigger than 1MB. You don't need anyone's permission.
Starting another new thread about it isn't going to change anyone's mind. If the past two years hasn't convinced you of that, then I don't know what to say.
If your argument is so strong, and you believe bigger blocks are far superior, the market will obviously choose the chain with bigger blocks. Just do it.
Can't do it because Greg Maxwell needs to cripple the network so their will be more demand for his Lightning off chain approach. The thing is, if Greg agrees to go to 8MB today, blocks won't be full again until Lightning is ready. That way, they can have their off chain scaling approach AND no network congestion for the next 3 - 5 years.