Aside bitcoin investment it is very wrong to force people to invest in any investment they don't want to since you won't bear the loss with them if any because bitcoin investment is risky due to the volatile nature of bitcoin. however you can only advise them or guide them on the nature of the investment are introducing then. So it is left for them to decide whether to invest or not. I believe bitcoin has reached a stage where by people don't need to be forced to invest in it, rather they will be moved by what they have seen because people are mostly moved by result rather than action.
Like na watin me sef wan relate because how even possible say dem force person do something for this modern age wey we dey, because if to say na convince dem convince ehen then that one na another case but say na force, I no reason well at all. Bitcoin investment involved something wey you go out your money and if you no make enquiry before you do anything like this then you sef na the true fault if the outcome goes otherwise.