BigQuery has several advantages that could make it a more advantageous storage backend than Object Storage via PrestoDB for adopters without a pre-existing instance or commitment to object storage.
Native storage of WKT, GeoJson, and Shapefiles that can be queried via standard geospatial queries (no coercion to WKT needed)
Free federation/joining against Google public datasets
Google Cloud team maintains BigQuery api client library available on Hex.
BigQuery has several advantages that could make it a more advantageous storage backend than Object Storage via PrestoDB for adopters without a pre-existing instance or commitment to object storage.