Abstraction isn't free... even if you had the correct abstraction and the tools to remove the parts you don't need for deployment, there is still the cost of understanding and compiling.

There is also the cost reason, somebody trying to sell an abstraction will try to monetize it and this means not everyone will want/be able to use it (or it will take forever/be unfinished if it's open/free).

There's also the platform lockin/competition aspect...