But that will cost money (I'm not sure exactly how much, in the US), to rent the storage space(s).
In Sydney a 6m x 9m (54sqm/580sqft) storage shed is about $1400/month. $1000/month for 6m x 6m.
You can actually lease a unit/apartment for the same price
It is a fairly expensive thing, at those prices.
For you, with a thriving YouTube and other stuff, business. You can justify (business case) and afford it.
Similarly, if the area in the US's, storage rental rates can drop enough, in a unpopular, not so convenient location. Which I hope is possible, but I'm not familiar enough with the US, to be sure.
Maybe Fran's YouTube and business activities, can afford the storage.
If they CAN'T afford them, then solutions, such as downsizing, need to be considered.
But maybe Fran could raise prices (on the other activities) and attempt to make more money via the YouTube things.
In fairness to Fran and others, stuff in life costs money. If Fran has effectively created a tiny/modest TV channel like thing (YouTube), then there is a need for some revenues to come in and pay for things, like rent etc.
I've seen and enjoyed some of Fran's videos, in the past. Such as weird, somewhat long forgotten, display devices. Which they very determinedly, researched and got it working, for the video. It was very nice to watch.
Actually, I've just had a look, to refresh my memory.
I've really enjoyed, lots of Fran's videos, on various rare things. Such as rare electronics kits, rare LED's, space related electronics etc.
I'm now beginning to feel guilty. I'm not particularly good, at brand recognition. I tend to just watch interesting videos, without necessarily remembering the channel it was. I'd forgotten how many of Fran's videos I'd watched and enjoyed.
Unfortunately, I'm the sort of person, who watches electronics related videos, but who doesn't send any money. (I don't want to admit my adblock status, but you can probably guess ).
In the case of Daves EEVblog, he does sometimes sell things, which I am at least tempted to buy, at times. Such as multimeters, and microcurrent devices. So, sooner or later, I could end up contributing, indirectly, financially.
This post has got, too big, sorry.
Modern life seems to have created this YouTube channels thing, whereby MOST viewers, can just not directly pay any money for it (i.e. it is "free"). Rightly or wrongly, that is the way of the world (of youtube), at the moment. But google sooner or later (I know they already partly started this), may move to a more subscription like model, and allow people like me, to essentially contribute to the channels, without actually specifically paying a particular channel with contributions.
i.e. A sort of Netflix for YouTube. So if you watch lots of electronics related videos, they get a significant chunk of your subscription to youtube. Hence can carry on, doing their stuff.
But I'm a tiny/minute cog, in a massive machine, full of giant cogs, so can't initiate changes like this, myself. Unless I turn into Bill Gates, or similar, and do it myself.