When I look at Bitcoin from a practical point of view, I don't see $1 trillion worth of goods and services being passed through it. Russia and Australia have an economy of $1 trillion. Their total population can collectively only produce $1 trillion in value. What can Bitcoin do? Not even 1/50th of that.
You are proven wrong already. Bitcoin has processed over $2 trillion worth of transactions this year. Most of it is likely due to speculation, but still, the network has processed that much in value, which is the most important metric to focus on. I expect this trend to continue and we'll likely break $3 trillion next year, or the year after.
LN will eventually process a fair amount of transactional value as well, so we can look forward to even more growth in that field. We already have wiped PayPal & Co off the table in terms of transactional value, and remember that we're still just starting up.
I really like this answer, a short and pointly presented error and finally a beautiful strike about LN and PayPal.
I would just only add, that it is still just an experiment!
