Well, I consider the drive of economic interactions to be classified in essentially 2 categories. Of course, the ULTIMATE drive is simply consumption (or meta-consumption). Consumption is seen very broadly as "satisfying one's needs and desires" (included, empathic desires, such as wanting to get the impression that your kids, or poor people, or your political party, are "happy").
But there is consumption, and then there are "plans". There is direct consumption, and indirect consumption.
You can of course acquire directly assets and services that bring you this satisfaction: that's direct consumption. But you can also " make a plan" to increase your perceived capacity to consume in the future. As such, the acquisitions of assets you do in the frame of that plan are not directly interesting to you (you do not acquire them directly for their capacity to bring you satisfaction).
But in making your plans, you can be dependent on a bet on the future economic interaction of others, and then I call that speculation, or you can not be dependent on that, in which case it is not speculation.
Investment is the acquisition of assets that are used in production. In other words, investment is buying stuff that will help make products.
Now in as much as that production is going to provide you with your consumption goods and services, that investment is not speculation. In as much as that production is to be sold to others, it is speculation, because you are betting on other people's future desire and capacity to buy your production.
Simplistic examples:
- you buy bread because you're hungry: direct consumption.
- you buy bread and freeze it, because you know that next week the bakery is closed, and you will be able (you think) to sell your bread with some gain: speculation and not an investment.
- you buy an oven to bake bread so that you can eat that bread: investment but not speculation: you are not dependent on other people's desires to buy bread in the future for your plan to work.
- you buy an oven to bake bread to sell it: investment and speculation.
Of course you can do combinations:
In your house, you install a second shower and bathroom. That's an investment, and it is partly a speculation. It is a non-speculation because you're going to use that shower and bathroom (consumption), but it is also a kind of investment because you think it will increase the sales price of your house when you will sell it one day.
If you buy shares, that's an investment and speculation, of course. The goods produced by the business you're buying the shares from are probably not meant for them to be consumed by you. But who knows
Apart from consumption, there is hence investment and speculation, but these are not mutually exclusive classes. There can be investment that is not speculation, speculation that is not investment, and investment that is speculation.
Now, whether we call investment that is not speculation, "indirect consumption" or whether we also call everything that is not direct consumption, indirect consumption, is open to debate
There's a form of meta-consumption, which is the satisfaction and the fun one obtains (sounds like consumption) if one is getting the impression of doing good speculation or investment.
So this gives a direct consumption utility to assets which don't seem to have any consumption value.
People holding a huge stash of bitcoins may get a lot of pleasure from contemplating that. As such, the holding of bitcoin (which is a purely speculative asset objectively speaking) provides pleasure (which is nothing else but the result of consumption).
Being a greedy bastard is based upon (too much) meta consumption of speculative assets. Living a poor man's life to "be rich in the bank" is driven by meta-consumption.