Raising the block limit isn't fixing something that's broken.
So it's essentially making an altcoin.
So when the block limit changed from none(or 32MB) to 1MB wasn't the equivalent of making an altcoin, but changing from 1MB to 20MB+ is the equivalent of making an altcoin? How come? I don't understand the difference between pre-1MB and post-1MB block limit. Please explain.
How does that substiate the claim that Bitcoin won't be able to support building on top of it?
Be specific. If you claim that the current max tps rate is insufficient for X, you must at the very least provide an estimate for the tps required by X, and some relevant points about why X is important to Bitcoin, on one hand, and your reasoning behind the target tps rate for X.
I admit that we(I) don't know how much space in a block will the Sicechains (or any other type of layer) need, but since we agree that regular users (coffee users) will not use the blockchain to purchase coffee then we have to agree that the transactions that will take place on the blockchain will be complex transactions which need more space than a regular transaction. A 15-of-15 P2SH transaction needs 1,481 bytes per script round trip. How do you know that there will not be transactions which will need 10k bytes? Or 100k bytes?
How would you feel when you won't be able to do any transactions with your bitcoins unless you enter a fee auction?
As being a part of a sane market.
What type of "market"? Maybe a financial one because that's not how markets work when it comes to technology. Internet is not working that way. Cell phone service providers aren't working that way. Show me an example because I think we have a different understanding of what Bitcoin really is.