Just looking around for a posting on this, and just a few comments since I just got a new TV with a smart TV system. I was going to buy a 55" LG at Costco but then ran into a few problems, including that I wasn't going to be able to fit it into my car to take home. So I looked and got one delivered.
Mine (a 55" Samsung) came with a bunch of apps preinstalled and even access to some free digital TV service that Samsung provides. It looks like it's ad supported. I was also able to select apps to download, although the available storage for the apps is limited. I think there might have been about 220 MB available for new apps. Disney+ took a little over 10 MB.
These systems are nice and convenient, but eventually they'll be superseded. They may be upgradeable. We've got a DISH Hopper receiver which has certain streaming services available, but they're rather limited (Netflix and
YouTube basically). However, it can do a complete firmware update. The last major update changed the On Demand selection menus, and while it looks better I don't like the functionality. It's possible that there are certain things fixed in the hardware and the services used have to have a supported interface to the server. I got my Sony Blu-Ray player in 2011 and it had a wired ethernet connection as well as access to several video streaming services. One the years it had several firmware updates, but eventually I got messages that several of the services (YouTube and
Amazon Prime) would be discontinued because of API support being discontinued.
Also - anyone prefer Wi-Fi or wired? I tried using Wi-Fi for a while, but then plugged in a wired connection. I was able to figure out how to check the network connection, and it was still Wi-Fi until I changed the setting. That's not like my computer which picks wired (when connected) by default. I'm finding a wired connection to internet more responsive.