The cost of you (a) sending a bitcoin is borne by: (b) miner, (c) users running nodes - who have to store and verify your transaction for all eternity.
The miner and sender arrive at a fair price in this free market. Neat, right?
But, you do see that that conclusion rests on (c) being negligible, right? And, that's where the block size debate comes in.
Already, people's hard drives (and backups) are filling up because Joe sent Jack some 0.0000001 bitcoin somewhere. Imagine your hard drive, and everyone's hard drive filling up every time one of the billion users sends another of the billion users one cent for a negligible cost (because cost above 0 is free extra money to the miner.)
If blocksizes are not limited, (a) and (b) together maximize their profit by externalizing their costs to (c) where the cost gets amplified manifold.
Mr. Gavin, who *drove* away Satoshi by going to CIA, and conveniently declared himself bitcoin's successor fails to understand both the economics and the technicalities.
The fact is that people like Maxwell (the real horses who do most of the bitcoin heavy lifting and who understand the technology and economics of bitcoin far better than Gavin) were dousing out fires even with the 1MB blocksize, even as Gavin was running a public campaign to increase the limit even further.
All the other developers know this ... that the (self-declared, in-name-only) emperor has no clothes. Gavin also knows very well that he has no power to unleash his silly idea on other developers, so he's decided to fork it.
His idea has barely any support among any person who's the who's who of bitcoin's technical world. Yet, he falsely declared to the public that he has, not just majority support, but vast consensus for his idea.
He used to publicly say that he believes in being very conservative, and that not breaking bitcoin is his first focus above all. This sudden change is weird and hard-to-believe.
But, public and all the noise aside, the miners and big nodes have real economic interests. So, they employ actual technical people. And, indeed, Gavin's idea has found very little support not just among developers, but among all the large economic entities in this world.
That's what this fork is, then. A lot of noise.
Gavin has always been mainly a PR person. And, it shows. It really shows. PR people are very good at declaring themselves in charge, even as other developers are quietly snickering at their stupid pronouncements.
With this fork, he's basically taken himself out of the loop. Win-win, I say.