Well, you can't really convince the miners when there isn't a HF proposal that properly does this post-segwit. The only BIP that increases the block size sometime and builds on-top of Segwit is luke-jr's. However, that one does't see any growth until a few years into the future.
I heard from Luke's BIP. A block size of 300 kB (if I remember right) is far too low for now - I think that would already be a decision in favour of a digital gold without "regular on-chain payment functionality" which I highly doubt it will work.
But the rest of the plan goes into the right direction. Exactly such a BIP (Segwit and then 17% increase every year) would be my preferred way to solve the problem. I would even propose such a BIP myself but would need the support of Bitcoin experts as I'm not a programmer and so nobody would take me seriously
