Dogecoin.ca was also in TBR in past year I think, before the price took offer.
As for ETH.ca, there are people out there, and some of them Canadians I imagine, that were buying ETH at 10 cents or a dollar each when it came out, and probably bought a lot. So I could see a Canadian crypto holder buying ETH.ca for high 5 figs or low 6 figs just as a vanity domain. Or even one of the Canadian crypto exchanges like Netcoins.ca, Bitbuy or CoinSquare. Some of these people are used to paying big dollars for NFTs already, so a one of a kind matching domain for ETH could be seen as having value. Not to mention if crypto prices have another big run like some people think, will make us see a lot more domain sales to these companies and investors.