That's a circular argument. Lots of people are reluctant to adopt a technology that isn't scalable. In't isn't exactly the Field of dreams. If you build it, they may not come BUT if you DON'T build it, they certainly won't.
This.
I was talking to the owner of the bar I was at the other day and was explaining Bitcoin to the owner. I almost had him convinced to start accepting bitcoins for payment when he stopped and was like "wait a minute, what are the block size parameters and transactions per second?". Needless to say he was displeased that in 2 years the code would need to be changed if current transaction volume continued to increase at the current rate. He then started asking me about alt coins like Doge. He decided to start accepting Doge instead because he thought it had a funny picture with the dog and he was like "you has doges?".
A SNARK IS NOT AN ARGUMENT. THE PEOPLE WHO BUILT SOFTWARE INFRASTRUCTURE ARE NOT GOING TO LAYER ON TOP OF A NON-SCALABLE BLOCKCHAIN. It's too much work for too little reward. The people who finance the infrastructure are not going to pay for it. Speculators like me are not going to invest when the expected future returns are based on the utility of only a settlement network.
We don't have two years. Bitshares 2.0 is going to launch literally in a week. Altcoins can take all your good code and build a chain on top of it now. Many have and a billion-dollars to launch a real competitor is chump change for Silicone Valley or Wall Street. I understand you want an armored truck and not a sports car, but even a Brinks truck has to keep up with traffic. If you want Bitcoin to be the MySpace of crypto, keep doing what you're doing.