The reality is that these days there generally isn't any packet loss, so UDP vs TCP isn't such an issue as it might have been in the past. In fact TCP has a number of advantages these days such as easier firewall traversal, WebSockets, etc.
Do you have any sources/data on that? Genuinely interested where you drew that conclusion from. From my vantage point (anecdotal), ISPs and carriers routinely under-provision, congest peerings, and don't find a problem well until after a number of customers complain.
Introduction
Bufferbloat is the undesirable latency that comes from a router or other network equipment buffering too much data. It is a huge drag on Internet performance created, ironically, by previous attempts to make it work better. The one-sentence summary is “Bloated buffers lead to network-crippling latency spikes.”
The bad news is that bufferbloat is everywhere, in more devices and programs than you can shake a stick at. The good news is, bufferbloat is now, after 4 years of research, development and deployment, relatively easy to fix. See: fq_codel: wiki. The even better news is that fixing it may solve a lot of the service problems now addressed by bandwidth caps and metering, making the Internet faster and less expensive for both users and providers.
The introduction below to the problem is extremely old, and we recommend learning about bufferbloat via van jacobson’s fountain model instead. Although the traffic analogy is close to what actually happens… in the real world, you can’t evaporate the excessive cars on the road, which is what we actually do with systems like fq_codel wiki.
Still, onward to the blow.
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I work on protocols that use sketchy wifi on mobile units that roam among access points. Sometimes they roam into RF black holes. TCP is all kinds b0rk3d for what I am doing.
I'm not sure how UDP is going to help if you have no connectivity.
These days TCP copes as well as UDP with temporary complete loss of connectivity, due to fast recovery. It is really just packet loss that kills TCP, but that isn't generally an issue these days if you're in the USA/Canada/Europe/Japan/Korea/Australia, and your wifi isn't crapping out.
I don't know which reality bubble you live in, but this is utterly false. I live in the country side and get routinely an average of 40% packet loss on many, many websites. There are plenty of occasions for packets to get lost somewhere between a client and a server.