You know that the first crypto type of digital currency issued and known to the public in this world is Bitcoin, its technological development is far different from other types of crypto, including defi.

Bitcoin is traded in a decentralized manner, cannot be controlled and determined by any party, this is the basic point.

Defi a project developed by companies and investors with the aim of collecting profits in other ways, defi is in the form of several types of coins currently circulating with limited capacities, very few, for example YFI etc. only 30,000 coins exist.
What you need to know, if one day companies and investors are no longer focused on defi projects, all of these coins can return to their bottom price.

do not look at current prices, going forward.

Defi is very different from Bitcoin from everything including its development, which means: defi cannot compete with Bitcoin in any way for now and into the future.
If explained here it may take several pages to write down the reasons why the defi project cannot compete with Bitcoin.