Aye, but forcing them to put a clear "We support this until this date" label will make that a mandated part of their marketed.

That or, you know, force companies to release server software when they sunset support for their product. That would also be nice.

And then products without that label would gain at least a little a bit of market share. Most people still buy inefficient fridges because they are shinier, but at least a few read those yellow labels mandated by law and choose the more efficient ones.