You hit the nail on the head with the challenges that you stated! While I'm a really, really big fan of decentralized platforms AND indieweb, i acknowledge that many (though not all) of the apps to allow users to on-ramp are not yet as simple as those that the proprietary silos/platforms might offer. Or the apps might be ok but requires more time/committment for users to set up things before extracting benefits. This of course sort of prevents otherwise willing new users from joining the fray...but I'm comforted by the fact that this is almost exactly how it was many years ago when the web first became available to the public, and many people thought things were "too tough" to get people onto the web; and yet here we are with so many people on the web. I'll admit that perhaps I'm an optimist. ;-) But i feel we just need to get a few Goldilocks-type killer apps to drastically ramp up user engagement. Cheers!