Apps are moving to LSM based storage engines.
RocksDB or Badger are the future.
Now, you just need to make embedded DB with Sqlite API using rocksdb/badger and sell it as direct competitor to Sqlite.
It will be a dropin replacement for Sqlite, written in a safer (hacker hype) language.
For more Omph, use Rust as a language for this and create libaries using FFI for python/ruby/node/c#
Pretty sure selling it won't work. For many, a convenient mini-storage is an afterthought during a product development and it doesn't warrant a cost.
Apps are moving to LSM based storage engines.
RocksDB or Badger are the future.
Now, you just need to make embedded DB with Sqlite API using rocksdb/badger and sell it as direct competitor to Sqlite.
It will be a dropin replacement for Sqlite, written in a safer (hacker hype) language.
For more Omph, use Rust as a language for this and create libaries using FFI for python/ruby/node/c#