It depends on the person. For normies, it's bitcoin's volatility. You have to be able to answer the question of how they will make payroll and pay their vendors in a guaranteed way if they start accepting lightning.
For bitcoiners, it's about the technical complexity...they tend to want completely trustless setups (power to them) but they become their own enemy because it becomes so, so complicated.
It depends on the person.
For normies, it's bitcoin's volatility. You have to be able to answer the question of how they will make payroll and pay their vendors in a guaranteed way if they start accepting lightning.
For bitcoiners, it's about the technical complexity...they tend to want completely trustless setups (power to them) but they become their own enemy because it becomes so, so complicated.