that's the point of this test, because bitcoin can't handle this, and we can't reach mainstream with the current TX limit, mainstream is far worse than just 150 tx per second, far far worse, the tx spam that you're seeing right now is nothing in comaprison, a big joke....
take a look at the TX volume of Visa for example, this is what we call mainstream
BTC will never EVER have the same TX volume as Visa. Why? because BTC will be a token for the largest financial ledger of the world. ppl wont use BTC to buy coffee. They use it to buy a house, pay tuition or simply hedge against other financial vehicle
Not true. Bitcoin is already being used for coffee. Altcoins are mostly used for trading. Altcoins don't have the infrastructure, most don't even have mobile wallets. Bitcoin will be widespread and useable for most things soon enough. Not as many people care about the ledger as should. They just like something that works. They want an easy wallet, an easy way to buy, and that it be accepted everywhere. We are light years away from any altcoin having that. Bitcoin is getting there.
The difference, however, are the copious amount of people that buy with credit. For them, credit cards are going to be the only way. So yes, Bitcoin will not have the amount of usage as visa does.
Edit: I'm taking for granted that what you mean by what you say is that Bitcoin will be used for big transactions and altcoins will be used for coffee or small things.