it means all the transactions which are allowd to be process become more expensive and the rest are prohibited entirely
Entirely?
Please expand or point to a post where this is explained further... thnx
To put it simply, if Bitcoin, right now, had even a tenth of the amount of users of one of the major credit card companies with a 1MB limit, it would be like trying to squeeze an entire novel into a twitter post. Only a small amount will make it in.
People sending large transactions with large fees will make it into a block just fine, but even people sending moderate amounts, like $10 or $20 with moderate fees will be left waiting for space in a block or forced to go off-chain and trust a third party. There definitely won't be room for anything smaller than that.