Yeah, as I said, active users are the true advantage - but the Steem blockchain itself is just one of many Legos out there. I also think that chains won't survive if they just deliver gambling dapps, but this is, unfortunately, the first and seemingly most profitable use case. (Like porn was a huge selling factor for the internet itself)
That's why developers will focus on it first. I'm not a gambler myself, but profit-sharing on dapps is actually a huge advantage and novelty in this field. Tron has more transactions than the top 5 cryptos combined each day and yes, over 50% at the moment is also about gambling. This development won't stop there and there will be many more other and valuable content coming over the next months.