Please ignore the other poster here who responded to you rudely.
But behind that prickley comment there is perhaps a question worth being asked, and an opportunity for you to sell your product via an answer:
Electron is not your only competition. Qt provides a strong contender, with Flutter gathering popularity by the day. And they're both open source. What features or traits of your offering justify the downsides of:
1) Having to pay for it.
or actually what I think is the bigger issue:
2) Basing their app on technology they can't control or modify, and therefore do not have the ability to maintain should it be abandoned? Essentially, anyone choosing your product is tying the long term viability of their app to your ability to keep a small company afloat and continue development.
I mean these as constructive questions, to be clear. But I think they also illustrate why open source frameworks are so vastly popular, and a major hurdle that your product has to overcome.