It is a totally different proposition to go and often manually lookup and harvest building floorplan data from town/city archives than to passively collect the same data floorplan data generated by devices in their ordinary operation.
The former is not scaleable in any reasonable way and every operation is an ADDITIONAL cost, whereas the latter is generated for the products' main purpose and you merely add some storage for the harvested data. Moreover, the generated data will be much more up-to-date (plenty of renovations or updates happen without building permits, legally or not).
The former is not scaleable in any reasonable way and every operation is an ADDITIONAL cost, whereas the latter is generated for the products' main purpose and you merely add some storage for the harvested data. Moreover, the generated data will be much more up-to-date (plenty of renovations or updates happen without building permits, legally or not).