The bitcoin core development team chose to implement the top option. The bitcoin XT, Classic, and Unlimited development teams chose to implement the middle option. Sadly, no team chose to implement the bottom option.
Two years ago, the XT, Classic, and BU camp(s) saw the high Tx fees and long confirmation times we have in place today – it was clear as day. But rather than paying attention to their concerns and incorporating a max block size increase into their SegWit design, the majority of the Core team and their backers chose to ignore, censor, and ostracize anyone who didn’t agree with their chosen path. As a result, we now have an existential crisis going on within the bitcoin community which may lead to the total collapse of the ground-breaking cryptocurrency. Bummer.