In the Marx era “owning capital” was a means to create products that you could sell to make money.
In 2019, where if you have a credit card to create an account on AWS, you can create a product that has a near zero marginal cost.
In 2019, where if you have a credit card to create an account on AWS, you can create a product that has a near zero marginal cost.
That being said, it does strike me that in the Marx era it was most likely easier to be successful as a regional provider of some commodity while globalization means that even a manufacturer is effectively competing against the entire world.
If you do, and it sells, you're an owner / producer. If you don't, you're a worker / consumer.