Maybe 100 sat is the psychologic limit
It;s just the coin has stabilized for a while and it will take more than dogecar for it to break out.
There are still plenty of coins getting mined and lot's of them sold and bought.
I think that it's just the fact that doge fan base are not investors to pour money into the coin as opposed to btc.
From what I read here and on reddit there are plenty of doge investors, but mostly younger with much smaller stakes than a typical BTC or LTC investor. That means doge needs larger user (and investor) base to match or beat their numbers in fiat sense. Bitcoin community is growing, too, and to keep or improve the position doge needs to continually outperform in user numbers. I do believe doge user base is growing much faster than BTC or LTC user base, and if you combine that with more halvings, demand will definitely grow. As for supply, it is probably already more dependent on spenders/holders/traders than mining rewards, so near term supply might be harder to predict.
Of course, there are plenty more parameters, this is just one of them.
To da moon!