If you have the opportunity to start mining for free or with very little investment on electrics, then I would buy asics.
But if you need to repair the premises, rent, security, noise boxes and other additional costs that will greatly affect the payback, then here you need to consult on circumstances.
And then there are also tax issues.
If you are mining in a private house, your neighbours may not like the noise.
You need to consider all these circumstances.