Yeah, at this point it's better to buy Bitcoin and wait, if you want to build a solar mining farm and still buy Asic miner it's going to cost a lot.
This is an easier option, when one has the ability to build an investment in bitcoin, the power of building mining using ASIC requires basic and maintenance costs, so we need spare capital that we have to think about.
Electricity costs, room temperature levels and other supporting tools also need to be considered in the process of mining, mining power will not be maximized if you don't have the power of tools as a support.
Buy a BTC at 16k and wait, if BTC goes back to 59-69k again then you will have enough to build yourself a mining farm with solar panels.
I have successfully build my own solar farm in 2021 but for GPU mining and now all I need is an Asic miner.
If financial strength is sufficient, it may be true as you say, Asic is a tool that can be used in mining, but there are many other tools that can help people to mine, most people who mine individually and independently have difficulty meeting targets from mining results, let alone talk about the number of mining tools we have and the timeframe for producing bitcoins.
Mining power is largely determined by the quality and number of tools used, when the capabilities of the machines we have are not balanced, then mining will produce little value.