It’s a great concept for the traveler but the price structure limits who will be using them.
At many airports there are hotels with reasonable “day rates”.
In the case of needing the room over 3 hours, there are hotel options very near the airport that would be more cost effective.
The minute suites have great convenience and could be viable with a price that makes them hard to refuse.
I just think the price range is at the senior executive level vs. the general business traveler level.