Vzw and others, offer unlimited data (intended for use by your cellphone apps and whatever streaming service they are aligned with and giving you on the phone)
Recently metro PCS it was free music streaming on Pandora and other music apps, no limit no counting the data, with a previous plan offer, it was free cbs tv programming live steam, whatever was on CBS in your time zone, was available to watch on the phone
The unlimited data for phone is 'intended' to be for single user on the phone web browsing, email, on the phone video music etc,
And they do monitor what app is using the data,
So mobile hotspot Wi-Fi on the phone has a limit to control data use by multiple devices aka pc's and tablets, the newer the cellphone, the newer the version of Android, the more difficult to access phone app unlimited data allotment via phones Wi-Fi hotspot, for many people it means one laptop or pc tethered via USB cable to the phone and a third party app on the phone, to utilize that connection
No hotspot Wi-Fi for the unlimited streaming of HD movies/tv to multiple devices
I have one of the "OLD" Verizon unlimited data plans
With no hotspot Wi-Fi allowed, having mobile hotspot was an extra paid option when I obtained this plan when first offered years ago, in recent years they raised the price and added throttling under high usage periods,
I keep it active mainly as a fall back,
Since I have one of the AT&T unlimited data Mobley WiFi Hotspot plans, intended for moving vehicle use,
Recently and maybe still being offered is Visible phone plan $40 per month, unlimited everything, calls, text, phone data and mobile hotspot,
No stores, order online only, and you might have to buy a new phone, they are restrictive on which phone can be 'bring your own' they won't accept my Samsung S5, but will accept a Samsung S9 or several recent iPhone models
IMO the best any of us can do, is get one of these essential cheap unlimited data plans, when they come around, then make the monthly payments on time every month just like insurance, even if stuck at home, the trouble caused by stopping or canceling, just trying to save a few months payments on non use low use period, is not worth the frustration involved in looking for another low cost high use plan, that might not be available, when the needed time arrives