And btw, let's think who is interested in spreading FUD about Segwit and LN, going as far as making ridiculous statements such as 'segwit is an altcoin'?

Should Bitcoin as it is now go mainstream, even with 20 MB blocks it won't be able to process daily payments of average Joe. So business of payment processors such as Visa will be unaffected. Nothing prevents them from being able to process payments denominated in Bitcoin just like they do it now with USD. That means of course that people will have to put their BTC in banks, fractional reserve banks precisely speaking. So Visa's business is unaffected, bank's business is less affected. Well it's a little conspiracy theory, don't take it too seriously.