Every cloud provider will have these issues with specific instance types in specific regions, although the Azure Germany situation sounds perhaps a bit more dire. At my past (much larger) employers we’ve always run into hardware capacity issues with AWS too - we’re just able to work around them. Building on cloud requires a lot of trade offs, one being a need for very robust cross-region capability and the ability to…
The major cloud services are expensive. This extra cost is supposed to provide for cloud services' high level of flexibility. Running out of capacity should be a rare event and treated as a high priority problem to be fixed asap.
Without the ability to rapidly and arbitrarily scale, they're just overpriced server farms.