I don't think so.
My 2012-model 47" and 42" Panasonic Smart TVs have not received an update since about late 2014 - and yes, I do check every six months or so. It might, however, come as a big surprise to the security community that I will continue to use them for the remainder of their useful life, rather than trashing them.
On the other hand, I'd welcome regulations that mandate regular and quick (within 1 week of CVE) security patches for all IoT products manufactured within the last 10 years, and what I mean by this is strictly security-related. I do not, for the sake of argument, think that manufacturers should be forced to backport functionality - other than what is required to keep the product as functional as it was on day one (e.g. Youtube API updates.) But that's another argument for another time.
A fine balance has to be struck between forcing manufacturers to support their products for a reasonable approximation of the product's useful life (not just the warranty period) - but also allowing them the ability to innovate, without crushing regulatory burdens. However, it's obvious that leaving this up to the manufacturers clearly hasn't worked: Many use security updates (or the lack of them, to be more precise) as a sales tool to coerce consumers into buying a new model.
A hidden benefit of this would be that vendors will be forced to start harmonising their build process. Much modern IoT development is still very Wild Wild West in nature, and not very standards-driven at all.