That's a silly thing to say. Of course you can put ads in it since it allows linking to things. What you mean probably, is that it's not as easy as embedding some google ads markup in your sidebar.
Advertisers love to burn money, but they draw the line at not being able to verify that the spend did what was promised.
With email, you normally use unique image and link URLs for each recipient, so you generally know who's opened the email and what they've clicked and can map that to their email address and whatever other information you have about them.
With RSS, you generally don't have any information about who's accessing the feed other than an IP address. It is possible to require users to log in and receive a unique RSS URL, which is what podcasts often do to give paid subscribers access to paywalled episodes, but that's not common for web RSS.
Even the injected ads idea was tried with companies like FeedBurner, later acquired by google.
If you're generating feeds on the fly with tracking metadata based on the requester, you can identify aggregators, and treat them equivalently to social media platforms where users circulate normal web links. You still get click-throughs to the underlying content from the end users, and you'll know the aggregator was the referrer.
Many podcasts use direct ad injection using metadata from the request to the enclosure link -- that seems to work well enough, and seems like the sort of thing that could be used for other content than just audio and video.
Let's not. Please.
If RSS has been more common, I imagine the bigger RSS readers (bearing in mind one of them was from Google!) would also have standardised on other ways of tracking clicks and ad views and all the rest. There just weren't enough people interested in RSS to make any of that worthwhile.
I say this as a user of RSS and someone who publishes a (very sporadic) RSS feed. It's a niche, because most people don't want to curate their own feeds.
Paying for content is a conscious action, it has a higher activation threshold than just clicking mindlessly on something that looks fun.
Then, transactions are expensive; micropayments are not a thing.
Subscriptions alleviate that a bit. Large middlemen alleviate that even more: Apple and Google can make micropayments like $0.50 viable within their ecosystems, so apps or in-app purchases can be tiny, and allow to remove ads for paying users. Attempts to do something similar for websites never took off, sadly.
Polling rate also has nothing to do with frequency of updates if you care to receive those updates in a timely manner. I haven't seen a reader default to 30 minutes or less.
Probably in both cases you just notice the bad implementations more because they make more requests.
And Atom supports pagination so you can limit the main feed url to be just one entry while still allowing for clients to retrieve older ones.
https://www.earth.org.uk/note-on-site-technicals-99.html#202...
I'm a small enough deal that I can call out specific readers at the top of a new post. A couple weeks ago I put up a post that started with the aside "hey one of you has a Turkish IP and you're pulling the whole feed every 10 minutes, please stop doing that."
(The podcast where I capture primarily audio material such as voice or sonfification that might as well also be presented in this alternative channel form...)
I'd be interested to listen to your podcast if you were to ping me its URL via one of the contact methods in my bio...
I can imagine an alternate timeline where Google Reader turned into a sort of Twitter (or FB or IG) feed.
Podcasts inject ads into the content: from RSS you get the link and description of the episode, and inside the episode are ads.
I guess that's why RSS is still a thing for podcasts? :-)
Readers don't know how to reply to the author in a standard way (like an email)
I host freshRSS and it's been amazing for me.
Yes, but mostly because of a lost opportunity.
I was working on my own web based reader when Google made a significant upgrade to their reader. It was similar to what I had made, so I thought it would be foolish to compete with Google and stopped working on it.
I wonder where RSS would be now if Google had not discouraged potential competitors.