And what is the solution? Of course keeping spammers on-chain, to force them to overpay, and batching real payments off-chain, to allow them to scale properly. Then, new rules are fully optional, and those, who want to overpay and spam the chain, can still do that. And as long as developers won't introduce soft-forks, which would remove the spam directly, this is what is probably going to happen: optional scaling for those, who will opt-in, and spammy chain for everyone else.

If instead of scaling, you think that people should switch from Bitcoin to something else, then it doesn't look like a good replacement for existing systems. Imagine having some dollars, and being told, that your neighbours are buying too much things, and you have to switch from USD to EUR for a while, just because of that (if someone used an argument, like "Bitcoin is too expensive to transact, please switch to Litecoin for a while", then it looks exactly like that). Bitcoin should be scalable, which means, that if there are thousands of pending transactions, then they should be batched and confirmed. If you push people outside of Bitcoin entirely, then you shouldn't be surprised later, that companies don't want to support Bitcoin, and they stick with fiat instead.