I remember trying to connect to our former online station built for grins and giggles, The Renegade Roadhouse, on TuneIn. This was several years ago, the user experience may have improved by now, but the buffering of the stream via TuneIn was unacceptable. Much better results were obtained by connecting directly through our website.
I spent a number of years administering a radio traffic reporting network, including the establishment of a traffic website. Problem was, twelve years ago the technology wasn't ready for prime-time. Today, traffic on the radio; who needs it? Information comes through phone apps much faster, easier and with more relevance.
"Build it and they will come" the adage from Field of Dreams is an Iowan curse well known by transportation planners. The volume of traffic on a road rebuilt to increase capacity will increase in short order and absorb the excess capacity. Our transportation network based on almost a one-to-one relationship (one car, one or two passengers) gets overwhelmed in times of excess demand. There's a corollary in our modern telecom system. Is there enough capacity to accomodate the connectivity demands we'll put on it in the future?
The one thing I have to admit broadcast can never deliver and online apps can, is measureability. Granted, I could hire click farms and distort the results, although I don't have Trump's money...
Back to topic: the one thing I do not understand is why it is that in Europe and most of the rest of the industrialized world, FM chips are activated and have been for a long time. Granted, analog FM is closer to extinction there since they've had a generally better roll-out of DAB, but their phones will probably include DAB capabilities in short order.
About the antenna problem: the solution may be walking and breathing just inches away from your smartphone. I've only briefly scanned this Google result as it's a 150 page thesis, and I won't pretend I remotely comprehend it. The Human Body Antenna: Characteristics and its Application The biggest problem I see is the antenna lead-to-skin interface. I'm afraid it'll be like little acupuncture needles!