this is a prime example of bad project management, we can't achieve any kind of consensus without first agreeing to what the main goals of the project is.
Stop being greedy and stop wanting everyone to use Bitcoin just because the price would be high. This would help you see things more clearly.
The problem is there are people who want regulate how many people can use Bitcoin by keeping current blocksize limit. The most obvious conflict of interest are altcoins which can only get used more at the Bitcoin expence, and those who invested in Bitcoin (speculative or in infrastructure) are mostly not in favour of artifically limited blocksize because it restrict how many people can conveniently use Bitcoin.
The question is not whether Bitcoin can scale to the Visa network but whether Bitcoin can scale to just keep up the demand, because there is not such high demand for Bitcoin to be used for Visa levels in near future. And im sure the answer is yes.