6)  Develop technology which safely allows 80,000 people to ride one bus with little or no difference in compfort and maintanance costs.

 - Now each passenger pays the expected modest fee and the bus company has enough income to operate a very secure business.

Developing such technology is more challenging that the simplistic ideas of 'buy more buses', or 'charge more per ticket.'  That seems to be the task that Blockstream is undertaking with their 'elements' suite of innovations.

sidechains could aggregate the activity of thousands of sidechain transactions to a single on-chain transaction.  Even a tiny transaction fee at the user level passed up to the Bitcoin backing layer would support very robust infrastructure.

I would add that merchants of a certain size will provide pretty decent savings to customers who will participate in their company 'rewards program' or use company gift cards.  If the merchant had their own branded currency system it must be worth at least as much to them as a silly little rewards card.  This could bring a tsunami of value into what I've always called a 'subordinate chains' cypto-currency ecosystem.  Sidechains would be an example but the word was not coined when I started promoting that scaling mechanism.

Seems to me that what Blockstream is shooting for is to be recognized as a trusted authority both technically and ethically in a world where sidechains are a major economic player.  If a 'branded currency' is a useful thing to large corporations, they (unlike a gaggle of plebs) have the muscle to induce governments to lighten up and allow them to at least exist.

I would never expect the financial services industry proper to be very supportive of real sidechains operating under a 'free' backing store since they are doing very well under the current fully controlled systems.  I could see this sector promoting something like XT which gives them the hope of monopolizing the take from a centralized and controlled solution just as they do with most fiat systems today.