They need to update their tech there to include Bluetooth speakers
This is totally missing the point. 🤦♂️ Why should they? They obviously don't need to a spend the money, except when someone turns up with something that lacks a long-running industry-standard port and doesn't have an adapter to replace it's missing basic analog audio out functionality. What bluetooth speakers? If they're decent loud video-conferencing speakers in a meeting room like we have here, or are an in-ceiling system like I've seen elsewhere, or just a straight up regular PA, no good, most Bluetooth speakers are crappy little things. So then a separate Bluetooth box that connects to the pre-existing speakers? For very few people to use and just has to be unplugged for >95% of users, else they have to bugger about trying to set up the right bluetooth pairing and which audio out they're using? Why? Makes more sense everyone just uses their audio out jack, or for the *very few* devices you're likely to use in a business enviroment without one, have the right adapter with you. Then it's right back to the original problem: iPad Pros annoyingly need an adapter and you don't always have one with you.
If you can plug any laptop into it (or most tablets), you can't just pass the blame.
I didn't even think about this when I got my iPad pro last year and actually exclaimed a disappointed expletive aloud and facepalmed when I realised I didn't get one. Not to worry - I've since bought 3 adapters because I need to plug it in certain places without Bluetooth (the mix in on my electronic drum kit for one, so I can't "just use bluetooth" for many use cases). One was cheap and died. The other 2 are higher priced. One can be jumpy and I have to plug it in and out sometimes, the other doesn't work unless it has a power adapter in the 2nd port, so is a PITA. I could buy the Apple one, but then can't charge at the same time. Adapters are a minefield. And I've still been caught out a few places when I've been somewhere with it and can't plug in a mates stereo (a lot of decent high end audio from only a few years back, and basically any decent pro audio equipment/mixers/studio stuff obviously doesn't have Bluetooth, and doesn't need it). Or been at work with it, my Bluetooth AKG headphones have gone flat, and I can't just plug the wired lead in instead.
If it had a simple 3.5mm jack I'd have no adapters, no issues, never be caught out, and it would *always* work. Maybe you can make the counter-argument for an IP67 rated phone that fits in your pocket and you use outside in the rain? But I call BS on justifying it for a 12.9" 'pro' tablet with no IP-rating for water/dust ingress.